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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 8.5.0
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) { } Warning: unexpected NAN value was coerced to bool in /in/FPuOD on line 25 bool(false) bool(false) bool(false) bool(false) bool(false)
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14
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)
preferences:
135.04 ms | 410 KiB | 5 Q