function startsWith($haystack, $needle){ $length = strlen($needle); return (substr($haystack, 0, $length) === $needle);}function endsWith($haystack, $needle){ $length = strlen($needle); if ($length == 0) { return true; } return (substr($haystack, -$length) === $needle);}如果您不想使用正则表达式,请使用此选项。



