3v4l.org

run code in 300+ PHP versions simultaneously
<?php function strpose($haystack, $needle, $index = 0) { do { $pos = strpos($haystack, $needle, $index); if ($pos !== false) { if (!@trim($haystack[$pos-1])) { if (!@trim($haystack[($pos+strlen($needle))])) { return $pos; } else $index = $pos+1; } else $index = $pos+1; } } while ($pos !== false && $pos < strlen($haystack)); return $pos; } var_dump(strpose("Hello World", "ll")); var_dump(strpose("Hello World", "Hello")); var_dump(strpose("Hello Worlds", "World")); ?>
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 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) bool(false) bool(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 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20
bool(false) int(0) bool(false)
preferences:
210.76 ms | 403 KiB | 346 Q