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run code in 300+ PHP versions simultaneously
<?php $block = '2*'; $pos = strpos($block, '*'); if ($pos !== false) { $num = substr($block, 0, $pos); } $min = str_pad($num,3,'0'); $max = min(255,str_pad($num,3,'9')); echo $min.'-'.$max;

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42.46 ms | 402 KiB | 5 Q