3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function check($input, $length = 4) { $sequence = "abcdefghijklmnopqrstuvwxyz"; $sequence .= substr($sequence, 0, $length - 1); // abcdefghijklmnopqrstuvwxyz is converted to abcdefghijklmnopqrstuvwxyzabc for ($i = 0; $i < strlen($sequence) - $length; $i++) { // loop runs for $i = 0...25 if (strpos($input, substr($sequence, $i, $length)) !== false) { echo sprintf('"%s" contains "%s"' . PHP_EOL, $input, substr($sequence, $i, $length)); return true; } } echo sprintf('"%s" is OK' . PHP_EOL, $input); return false; } check("youlookgreatbcdetoday"); // "youlookgreatbcdetoday" contains "bcde" check("youlookgreatklmtoday"); // "youlookgreatklmtoday" is OK check("youlookgreattoday"); // "youlookgreattoday" is OK check("youlookgreattodayza"); // "youlookgreattodayza" is OK check("youlookgreattodayzab"); // "youlookgreattodayzab" contains "yzab"
Output for 4.3.10 - 4.4.9, 5.0.2 - 5.0.5, 5.1.1 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
"youlookgreatbcdetoday" contains "bcde" "youlookgreatklmtoday" is OK "youlookgreattoday" is OK "youlookgreattodayza" is OK "youlookgreattodayzab" contains "yzab"
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/naM26 on line 21
Process exited with code 255.
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/naM26 on line 10 "youlookgreatbcdetoday" contains "bcde"PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/naM26 on line 14 "youlookgreatklmtoday" is OKPHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/naM26 on line 14 "youlookgreattoday" is OKPHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/naM26 on line 14 "youlookgreattodayza" is OKPHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/naM26 on line 10 "youlookgreattodayzab" contains "yzab"PHP_EOL