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@ 2013-12-15T19:05:53Z

<?php
$length = 4;
$string = "AB";
    $string = substr_replace($string,"",$length);
    $string = str_pad($string,$length,"-",STR_PAD_RIGHT);
echo $string;

Output
Performance
VLD
References
Branches

substr_replace: documentation ( source)
str_pad: documentation ( source)

preferences:dark modelive preview

39.19 ms | 402 KiB | 5 Q