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run code in 150+ php & hhvm versions
Bugs & Features
<?php function longest_palendrome($string) { $current = $longest = ''; foreach (str_split(strrev($string)) as $char) { if (strstr($string, $current . $char)) { $current .= $char; } elseif (!empty($current) && strlen($current) > strlen($longest)) { $longest = $current; $current = ''; } } return $longest; } echo longest_palendrome("i ama racecar ama aaaaaaaabbbbbbbbaaaaaaaa");
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
aaaaaaaabbbbbbbbaaaaaaaa
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: str_split() in /in/t32Mj on line 5
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: str_split() in /in/t32Mj on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: str_split() in /in/t32Mj on line 5