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<?php var_dump(empty('')); var_dump(empty('0')); var_dump(empty([])); var_dump(empty(null)); var_dump(empty(false)); var_dump(empty(0)); var_dump(empty(+0)); var_dump(empty(-0)); var_dump(empty(0.0)); var_dump(empty(0.00)); var_dump(empty(-0.0)); $xml = <<<XML <?xml version='1.0' standalone='yes'?> <a></a> XML; var_dump(empty(new SimpleXMLElement($xml))); echo "\n-------\n"; // false $stdClass = (object)[]; var_dump(empty($stdClass), $stdClass); var_dump(empty(NAN)); var_dump(empty([[]])); var_dump(empty('-0')); var_dump(empty('0.0')); var_dump(empty(' ')); // 半角スペース
Output for git.master, git.master_jit, rfc.property-hooks
bool(true) bool(true) bool(true) bool(true) bool(true) bool(true) bool(true) bool(true) bool(true) bool(true) bool(true) bool(true) ------- bool(false) object(stdClass)#1 (0) { } bool(false) bool(false) bool(false) bool(false) bool(false)

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