(window.webpackJsonp=window.webpackJsonp||[]).push([[2526],{2934:function(t,s,a){"use strict";a.r(s);var n=a(31),e=Object(n.a)({},(function(){var t=this,s=t.$createElement,a=t._self._c||s;return a("ContentSlotsDistributor",{attrs:{"slot-key":t.$parent.slotKey}},[a("h1",{attrs:{id:"using-curl-in-php"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#using-curl-in-php"}},[t._v("#")]),t._v(" Using cURL in PHP")]),t._v(" "),a("h2",{attrs:{id:"post-requests"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#post-requests"}},[t._v("#")]),t._v(" POST Requests")]),t._v(" "),a("p",[t._v("If you want to mimic HTML form POST action, you can use cURL.")]),t._v(" "),a("div",{staticClass:"language-php extra-class"},[a("pre",{pre:!0,attrs:{class:"language-php"}},[a("code",[a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// POST data in array")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$post")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token 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It support HTTP, FTP, SCP and many others(curl >= 7.19.4). "),a("strong",[t._v("Remember, you need to "),a("a",{attrs:{href:"http://php.net/manual/en/curl.installation.php",target:"_blank",rel:"noopener noreferrer"}},[t._v("install and enable the cURL extension"),a("OutboundLink")],1),t._v(" to use it.")])]),t._v(" "),a("div",{staticClass:"language-php extra-class"},[a("pre",{pre:!0,attrs:{class:"language-php"}},[a("code",[a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// a little script check is the cURL extension loaded or not")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("if")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("!")]),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("extension_loaded")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token string double-quoted-string"}},[t._v('"curl"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("{")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("die")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token string double-quoted-string"}},[t._v('"cURL extension not loaded! 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For simple session cookie handling in memory, this is achieved with a single line of code:")]),t._v(" "),a("div",{staticClass:"language-php extra-class"},[a("pre",{pre:!0,attrs:{class:"language-php"}},[a("code",[a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_setopt")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$ch")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token constant"}},[t._v("CURLOPT_COOKIEFILE")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token string double-quoted-string"}},[t._v('""')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n")])])]),a("p",[t._v("In cases where you are required to keep cookies after the cURL handle is destroyed, you can specify the file to store them in:")]),t._v(" "),a("div",{staticClass:"language-php extra-class"},[a("pre",{pre:!0,attrs:{class:"language-php"}},[a("code",[a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_setopt")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$ch")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token constant"}},[t._v("CURLOPT_COOKIEJAR")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token string double-quoted-string"}},[t._v('"/tmp/cookies.txt"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n")])])]),a("p",[t._v("Then, when you want to use them again, pass them as the cookie file:")]),t._v(" "),a("div",{staticClass:"language-php extra-class"},[a("pre",{pre:!0,attrs:{class:"language-php"}},[a("code",[a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_setopt")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$ch")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token constant"}},[t._v("CURLOPT_COOKIEFILE")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token string double-quoted-string"}},[t._v('"/tmp/cookies.txt"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n")])])]),a("p",[t._v("Remember, though, that these two steps are not necessary unless you need to carry cookies between different cURL handles. For most use cases, setting "),a("code",[t._v("CURLOPT_COOKIEFILE")]),t._v(" to the empty string is all you need.")]),t._v(" "),a("p",[t._v("Cookie handling can be used, for example, to retrieve resources from a web site that requires a login. This is typically a two-step procedure. First, POST to the login page.")]),t._v(" "),a("div",{staticClass:"language-php extra-class"},[a("pre",{pre:!0,attrs:{class:"language-php"}},[a("code",[a("span",{pre:!0,attrs:{class:"token php language-php"}},[a("span",{pre:!0,attrs:{class:"token delimiter important"}},[t._v("<?php")]),t._v("\n\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("# create a cURL handle")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$ch")]),t._v("  "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_init")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("# set the URL (this could also be passed to curl_init() if desired)")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token 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request")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$result")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_exec")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$ch")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n")])])])]),a("p",[t._v("The second step (after standard error checking is done) is usually a simple GET request. The important thing is to "),a("strong",[t._v("reuse the existing cURL handle")]),t._v(" for the second request. This ensures the cookies from the first response will be automatically included in the second request.")]),t._v(" "),a("div",{staticClass:"language-php extra-class"},[a("pre",{pre:!0,attrs:{class:"language-php"}},[a("code",[a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("# we are not calling curl_init()")]),t._v("\n\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("# simply change the URL")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_setopt")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$ch")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token constant"}},[t._v("CURLOPT_URL")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token string double-quoted-string"}},[t._v('"https://www.example.com/show_me_the_foo.php"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("# change the method back to GET")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_setopt")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$ch")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token constant"}},[t._v("CURLOPT_HTTPGET")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token constant boolean"}},[t._v("true")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("# send the request")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$result")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_exec")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$ch")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("# finished with cURL")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_close")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$ch")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("# do stuff with $result...")]),t._v("\n\n")])])]),a("p",[t._v("This is only intended as an example of cookie handling. In real life, things are usually more complicated. Often you must perform an initial GET of the login page to pull a login token that needs to be included in your POST. Other sites might block the cURL client based on its User-Agent string, requiring you to change it.")]),t._v(" "),a("h2",{attrs:{id:"using-multi-curl-to-make-multiple-post-requests"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#using-multi-curl-to-make-multiple-post-requests"}},[t._v("#")]),t._v(" Using multi_curl to make multiple POST requests")]),t._v(" "),a("p",[t._v("Sometimes we need to make a lot of POST requests to one or many different endpoints. To deal with this scenario, we can use "),a("code",[t._v("multi_curl")]),t._v(".")]),t._v(" "),a("p",[t._v("First of all, we create how many requests as needed exactly in the same way of the simple example and put them in an array.")]),t._v(" "),a("p",[t._v("We use the curl_multi_init and add each handle to it.")]),t._v(" "),a("p",[t._v("In this example, we are using 2 different endpoints:")]),t._v(" "),a("div",{staticClass:"language-php extra-class"},[a("pre",{pre:!0,attrs:{class:"language-php"}},[a("code",[a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//array of data to POST")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$request_contents")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("array")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//array of URLs")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$urls")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("array")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//array of cURL handles")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$chs")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("array")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//first POST content")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$request_contents")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token string single-quoted-string"}},[t._v("'a'")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=>")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token string single-quoted-string"}},[t._v("'apple'")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token string single-quoted-string"}},[t._v("'b'")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=>")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token string single-quoted-string"}},[t._v("'banana'")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//second POST content")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$request_contents")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token string single-quoted-string"}},[t._v("'a'")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=>")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token string single-quoted-string"}},[t._v("'fish'")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token string single-quoted-string"}},[t._v("'b'")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=>")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token string single-quoted-string"}},[t._v("'shrimp'")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//set the urls")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$urls")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token string single-quoted-string"}},[t._v("'http://www.example.com'")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$urls")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token string single-quoted-string"}},[t._v("'http://www.example2.com'")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//create the array of cURL handles and add to a multi_curl")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$mh")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_multi_init")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("foreach")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$urls")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("as")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$key")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=>")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$url")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("{")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$chs")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$key")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_init")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$url")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_setopt")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$chs")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$key")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token constant"}},[t._v("CURLOPT_RETURNTRANSFER")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token constant boolean"}},[t._v("true")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_setopt")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$chs")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$key")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token constant"}},[t._v("CURLOPT_POST")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token constant boolean"}},[t._v("true")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_setopt")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$chs")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$key")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token constant"}},[t._v("CURLOPT_POSTFIELDS")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$request_contents")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$key")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n    "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_multi_add_handle")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$mh")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$chs")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$key")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("}")]),t._v("\n\n")])])]),a("p",[t._v("Then, we use curl_multi_exec to send the requests")]),t._v(" "),a("div",{staticClass:"language-php extra-class"},[a("pre",{pre:!0,attrs:{class:"language-php"}},[a("code",[a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//running the requests")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$running")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token constant"}},[t._v("null")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("do")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("{")]),t._v("\n  "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_multi_exec")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$mh")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$running")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("}")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("while")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$running")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//getting the responses")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("foreach")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("array_keys")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$chs")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("as")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$key")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("{")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$error")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_error")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$chs")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$key")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$last_effective_URL")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_getinfo")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$chs")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$key")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token constant"}},[t._v("CURLINFO_EFFECTIVE_URL")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$time")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_getinfo")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$chs")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$key")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token constant"}},[t._v("CURLINFO_TOTAL_TIME")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$response")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_multi_getcontent")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$chs")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$key")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("  "),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// get results")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("if")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("!")]),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("empty")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$error")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("{")]),t._v("\n      "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("echo")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token string double-quoted-string"}},[t._v('"The request '),a("span",{pre:!0,attrs:{class:"token interpolation"}},[a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$key")])]),t._v(" return a error: "),a("span",{pre:!0,attrs:{class:"token interpolation"}},[a("span",{pre:!0,attrs:{class:"token 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"),a("span",{pre:!0,attrs:{class:"token interpolation"}},[a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$time")])]),t._v(' seconds."')]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v(".")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token string double-quoted-string"}},[t._v('"\\n"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("}")]),t._v("\n\n    "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_multi_remove_handle")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$mh")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$chs")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$key")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("}")]),t._v("\n\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// close current handler")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_multi_close")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$mh")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n")])])]),a("p",[t._v("A possible return for this example could be:")]),t._v(" "),a("blockquote"),t._v(" "),a("p",[t._v("The request to '"),a("a",{attrs:{href:"http://www.example.com",target:"_blank",rel:"noopener noreferrer"}},[t._v("http://www.example.com"),a("OutboundLink")],1),t._v("' returned 'fruits' in 2 seconds.\nThe request to '"),a("a",{attrs:{href:"http://www.example2.com",target:"_blank",rel:"noopener noreferrer"}},[t._v("http://www.example2.com"),a("OutboundLink")],1),t._v("' returned 'seafood' in 5 seconds.")]),t._v(" "),a("h2",{attrs:{id:"creating-and-sending-a-request-with-a-custom-method"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#creating-and-sending-a-request-with-a-custom-method"}},[t._v("#")]),t._v(" Creating and sending a request with a custom method")]),t._v(" "),a("p",[t._v("By default, PHP Curl supports "),a("code",[t._v("GET")]),t._v(" and "),a("code",[t._v("POST")]),t._v(" requests. It is possible to also send custom requests, such as "),a("code",[t._v("DELETE")]),t._v(", "),a("code",[t._v("PUT")]),t._v(" or "),a("code",[t._v("PATCH")]),t._v(" (or even non-standard methods) using the "),a("code",[t._v("CURLOPT_CUSTOMREQUEST")]),t._v(" parameter.")]),t._v(" "),a("div",{staticClass:"language-php extra-class"},[a("pre",{pre:!0,attrs:{class:"language-php"}},[a("code",[a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$method")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token string single-quoted-string"}},[t._v("'DELETE'")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// Create a DELETE request")]),t._v("\n\n"),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$ch")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_init")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$url")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_setopt")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$ch")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token constant"}},[t._v("CURLOPT_RETURNTRANSFER")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("1")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_setopt")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$ch")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token constant"}},[t._v("CURLOPT_CUSTOMREQUEST")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$method")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$content")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_exec")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$ch")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("curl_close")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token variable"}},[t._v("$ch")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n")])])]),a("h2",{attrs:{id:"sending-multi-dimensional-data-and-multiple-files-with-curlfile-in-one-request"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#sending-multi-dimensional-data-and-multiple-files-with-curlfile-in-one-request"}},[t._v("#")]),t._v(" Sending multi-dimensional data and multiple files with CurlFile in one request")]),t._v(" "),a("p",[t._v("Let's say we have a form like the one below. We want to send the data to our webserver via AJAX and from there to a script running on an external server.")]),t._v(" "),a("p",[a("a",{attrs:{href:"https://i.stack.imgur.com/55fQ6.png",target:"_blank",rel:"noopener noreferrer"}},[a("img",{attrs:{src:"https://i.stack.imgur.com/55fQ6.png",alt:"This is the form we want to send"}}),a("OutboundLink")],1)]),t._v(" "),a("p",[t._v("So we have normal inputs, a multi-select field and a file dropzone where we can upload multiple files.")]),t._v(" "),a("p",[t._v("Assuming the AJAX POST request was successful we get the following data on PHP site:")]),t._v(" "),a("div",{staticClass:"language-php extra-class"},[a("pre",{pre:!0,attrs:{class:"language-php"}},[a("code",[a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// print_r($_POST)")]),t._v("\n\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("Array")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token 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       "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n\n"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n\n")])])]),a("p",[t._v("So far, so good. Now we want to send this data and files to the external server using cURL with the CurlFile Class")]),t._v(" "),a("p",[t._v("Since cURL only accepts a simple but not a multi-dimensional array, we have to flatten the $_POST array first.")]),t._v(" "),a("p",[t._v("To do this, you could use "),a("a",{attrs:{href:"http://codereview.stackexchange.com/a/14685",target:"_blank",rel:"noopener noreferrer"}},[t._v("this function for example"),a("OutboundLink")],1),t._v(" which gives you the following:")]),t._v(" "),a("div",{staticClass:"language-php extra-class"},[a("pre",{pre:!0,attrs:{class:"language-php"}},[a("code",[a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// print_r($new_post_array)")]),t._v("\n\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("Array")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("\n    "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),t._v("first_name"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=>")]),t._v(" John\n    "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),t._v("last_name"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=>")]),t._v(" Doe\n    "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),t._v("activities"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=>")]),t._v(" soccer\n    "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),t._v("activities"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("1")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=>")]),t._v(" hiking\n"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n\n")])])]),a("p",[t._v("The next step is to create CurlFile Objects for the uploaded files. 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