Parsing CSV file using callbacks into new CSV file with changed data and header.

• PHP >= 7.1

1. Copy parse.example.php to parse.php:

   cp parse.example.php parse.php # and edit script parse.php for your purpose

2. In parse.php can be used three callback functions (see parse.example.php) for parsing CSV file:
   • Every row (rowCallback)
   • Header (headCallback)
   • Whole result (resultCallback)
3. Run php script:

   php parse.php # generate new result.csv file

Will generate new CSV file: data/result.csv file from the input file data/input.csv, where input.csv and result.csv - CSV filenames (set in the configuration array $config).

To get the result of parsing a CSV file do not include or just comment result param in the config:

<?php

use mrwadson\Process;

require_once __DIR__ . '/autoload.php';

$config = [
    'input' => __DIR__ . '/data/input.csv',
    // 'result' => __DIR__ . '/data/result.csv',
    'first_row_is_header' => true, # parse first row as header
    'include_header_in_result' => false # don't include header row in result
];

$result = Process::init($config)();

print_r($result);

In this case, the result file will not be written.

For every new project just copy parse.example.php to parse-my-project.php and use it for your purpose.

cp parse.example.php parse-my-project.php 
mkdir data/my-project # create dir for the config files (see section bellow)

And just run your parse php file:

php parse-my-project.php # will process input file from the $config['input']

Where is my-project - custom name of the project.

Or (for automatize) use prompted shell script:

read -p "Enter project name: " project_name && \
cp parse.example.php parse-$project_name.php && mkdir data/$project_name && \
sed -i "s#/data/#/data/$project_name/#" parse-$project_name.php

Configuration parameters are set in the array (in the $config variable) directly in the parse.php file.

There are:

• input - CSV file for parsing
• result - output result CSV file after parsing
• first_row_is_header - the first line is the header
• include_header_in_result - include/exclude the header in the result CSV file (only if first_row_is_header is true)

If you're working with multiple files best way to create a directory inside in the data directory. So your input and result files will be located by example at data/my-project/input.csv and data/my-project/result.csv files.

You can use Helper class for filtering and checking data. For example, to check and filter for some bad words use like this:

$result = Helper::matchBadWords(['some', 'bad', 'word'], 'this sentence has a bad word'); 
// result = 2

Or check if passed value is URL:

$result = Helper::isUrl('https://google.com'); // result = 1
$result = Helper::isUrl('google.com'); // result = 0

For more details, please see Helper class.