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<?php $data[] = null; $data[] = 0; $data[] = 1; $data[] = true; $data[] = false; foreach($data as $value) { $result = is_null($value); echo ("is_null ( " . var_export($value, true) . " ) = " . var_export(is_null($value), true). " \n");}
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 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 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 - 8.3.6
is_null ( NULL ) = true is_null ( 0 ) = false is_null ( 1 ) = false is_null ( true ) = false is_null ( false ) = false
preferences:
195.65 ms | 406 KiB | 386 Q