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Configuration of strspn()

<?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
 *
 * @see docs/function-configuration.txt
 */

class strspn extends function_core
{
    public 
$examples = [
        [
            
"42 is the answer to the 128th question.",
            
"1234567890"
        
],
        [
            
"foo",
            
"o"
        
],
        [
            
"foo",
            
"o",
            
1,
            
2
        
],
        [
            
"foo",
            
"o",
            
1,
            
1
        
]
    ];

    public 
$synopsis 'int strspn ( string $subject , string $mask [, int $start [, int $length ]] )';
}