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<?php $nullvar = null; $nullstr = ''; $notnull = 'foo'; $unset = 'something'; unset($unset); function quiet_dump($v) { ob_start(); var_dump($v); return ob_get_clean(); } $results = array( '==Results==' , '$nullvar = ' . quiet_dump(isset($nullvar), true) , '$nullstr = ' . quiet_dump(isset($nullstr), true) , '$notnull = ' . quiet_dump(isset($notnull), true) , '$unset = ' . quiet_dump(isset($unset), true) ); echo implode(" ",$results);
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 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 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 - 8.3.7
==Results== $nullvar = bool(false) $nullstr = bool(true) $notnull = bool(true) $unset = bool(false)
preferences:
278.36 ms | 406 KiB | 348 Q