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run code in 300+ PHP versions simultaneously
<?php function f( $str ){ $l = strlen($str); for( $i = -$l; $i < $l; $i++ ){ $I = abs($i); $s = substr($str,$I,-1); echo str_repeat(',',$I) . strrev($s) . $s . "\n"; } } echo "------------\n"; f(".desserts"); echo "------------\n";
Output for git.master, git.master_jit, rfc.property-hooks
------------ ,,,,,,,,, ,,,,,,,, ,,,,,,,tt ,,,,,,trrt ,,,,,treert ,,,,tressert ,,,tressssert ,,tresseessert ,tresseddessert tressed..dessert ,tresseddessert ,,tresseessert ,,,tressssert ,,,,tressert ,,,,,treert ,,,,,,trrt ,,,,,,,tt ,,,,,,,, ------------

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