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@ 2015-05-13T02:42:52Z

<?php

$mass = str_split('0123');
$length = 6;

foreach ($mass as $el) {
    $srt = null;
    for ($i = 1; $i <= $length; $i++) {
        $str += $el;
        
        if($i = $lenght) {
            $str = null;
        }
        
        print_r($str);
    }
}

Output
Performance
VLD
References
Branches

print_r: documentation ( source)
str_split: documentation ( source)

preferences:dark modelive preview

47.06 ms | 402 KiB | 5 Q