<?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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- is_null ( NULL ) = true
is_null ( 0 ) = false
is_null ( 1 ) = false
is_null ( true ) = false
is_null ( false ) = false
preferences:
205.03 ms | 406 KiB | 307 Q