<?php
$empty = '';
$null = NULL;
$bool = FALSE;
$notSet;
$array = array();
var_dump(empty($empty));
var_dump(is_null($empty));
var_dump(isset($empty));
var_dump((bool)$empty);
- Output for 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, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 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
- bool(true)
bool(false)
bool(true)
bool(false)
- Output for 5.0.4 - 5.0.5
- Notice: Undefined variable: notSet in /in/t9i33 on line 6
bool(true)
bool(false)
bool(true)
bool(false)
- Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
- Notice: Undefined variable: notSet in /in/t9i33 on line 6
bool(true)
bool(false)
bool(true)
bool(false)
preferences:
209.25 ms | 402 KiB | 310 Q