<?php
$data[] = null;
$data[] = 0;
$data[] = 1;
$data[] = true;
$data[] = false;
foreach($data as $value)
{
$result = is_null($value);
echo ("is_null ( " . var_export($value, true) . " ) = " . var_export($result, 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 - 5.6.40, 7.0.0 - 7.0.33, 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:
360.77 ms | 406 KiB | 458 Q