3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(preg_match('[0-9a-zA-Z]', 'bob', $matches), $matches); echo '---------', PHP_EOL; var_dump(preg_match('~[0-9a-zA-Z]~', 'bob', $matches), $matches); echo '---------', PHP_EOL; var_dump(preg_match('~[0-9a-zA-Z]+~', 'bob', $matches), $matches);
Output for 4.3.10 - 4.3.11, 4.4.0 - 4.4.9, 5.0.2 - 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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
int(0) array(0) { } --------- int(1) array(1) { [0]=> string(1) "b" } --------- int(1) array(1) { [0]=> string(3) "bob" }
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
int(0) array(0) { } --------- Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/o8IIR on line 6 PHP_EOLint(1) array(1) { [0]=> string(1) "b" } --------- Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/o8IIR on line 8 PHP_EOLint(1) array(1) { [0]=> string(3) "bob" }
preferences:
117.9 ms | 408 KiB | 5 Q