3v4l.org

run code in 300+ PHP versions simultaneously
<?php function in_string($needle, $haystack, $insensitive = false) { if ($insensitive) { return false !== stristr($haystack, $needle); } else { return false !== strpos($haystack, $needle); } } $needle = 'as'; $haystack = 'This is my assessment.'; var_dump(in_string($needle, $haystack, true)); var_dump(in_string(strtoupper($needle), $haystack, true)); var_dump(in_string($needle, $haystack, false));
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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.25, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
bool(true) bool(true) bool(true)

preferences:
282.69 ms | 405 KiB | 394 Q