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run code in 300+ PHP versions simultaneously
<?php function isPalindrome($str) { $strCheck = ''; $length = strlen($str)- 1; $i=0; while($length >= 0) { $strCheck[$i] = $str[$length]; $length--; $i++; } if($strCheck == $str) { return true; } return false; } var_dump(isPalindrome('hello')); ?>
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.17 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
bool(false)
preferences:
232.22 ms | 406 KiB | 341 Q