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<?php $body = 0; function isTotallyNull($body){ if ($body != null) { echo var_export($body,true).' is not null'.PHP_EOL; }else{ echo var_export($body,true).' is null'.PHP_EOL; } } isTotallyNull(null); isTotallyNull(1); isTotallyNull(0); isTotallyNull('lolz');
Output for 7.1.0 - 7.1.25, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
NULL is null 1 is not null 0 is null 'lolz' is not null

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