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<?php function arrpos(array $haystack, array $needle) { $len1 = count($haystack); $len2 = count($needle); if ($len2 > $len1) { return false; } for ($i = 0; $i <= $len1 - $len2; $i++) { if ($haystack[$i] === $needle[0]) { for ($j = 1; $j < $len2; $j++) { if ($haystack[$i + $j] !== $needle[$j]) { continue 2; } } return $i; } } return false; } $needle = [2,4]; var_dump(arrpos([1,2,3,4], $needle)); var_dump(arrpos([1,2,4,3], $needle)); var_dump(arrpos([1,2,2,4,3], $needle)); var_dump(arrpos([1,2,3,4,5], [2,3,4,5]));
Output for git.master, git.master_jit, rfc.property-hooks
bool(false) int(1) int(2) int(1)

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