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Configuration of array_udiff()

<?php
/**
 * PHP By Example
 *
 * @copyright 2014 Michel Corne 
 * @license   http://www.opensource.org/licenses/gpl-3.0.html GNU GPL v3
 */

require_once 'models/function_core.php';

/**
 * Function configuration
 *
 * Changes to this class may affect other classes.
 *
 * @see docs/function-configuration.txt
 */

class array_udiff extends function_core
{
    public 
$examples = [
        [
            [
                
"a" => "green",
                
"b" => "brown",
                
"c" => "blue",
                
"red"
            
],
            [
                
"a" => "GREEN",
                
"B" => "brown",
                
"yellow",
                
"red"
            
],
            
'strcasecmp',
        ],
    ];

    public 
$helper_callbacks = ['index_in_example' => 2'function_name_pattern' => '~(cmp$)~'];

    public 
$synopsis 'array array_udiff ( array $array1 , array $array2 [, array $... ], callable $value_compare_func )';

    function 
pre_exec_function()
    {
        
$this->_filter->filter_callback('value_compare_func');
    }
}