<?php
var_dump(
(array)5,
(array)null,
(array) 0);
$tests = [
'[] == false' => [] == false,
'"" == false' => "" == false,
'"ABC" == false' => "ABC" == false,
'"123" == false' => "123" == false,
'null == false' => null == false,
'0 == false' => 0 == false,
'0.49 == false' => 0.49 == false
];
$i = 1;
foreach($tests as $name => $result) {
echo ++$i . ") " . $name . ($result ? ' => T' : ' => F') . "\n";
}
- Output for 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
- array(1) {
[0]=>
int(5)
}
array(0) {
}
array(1) {
[0]=>
int(0)
}
2) [] == false => T
3) "" == false => T
4) "ABC" == false => F
5) "123" == false => F
6) null == false => T
7) 0 == false => T
8) 0.49 == false => F
- Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
- Parse error: syntax error, unexpected '[' in /in/8sEAP on line 7
Process exited with code 255. - Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
- Parse error: parse error, unexpected '[' in /in/8sEAP on line 7
Process exited with code 255. - Output for 4.3.2 - 4.3.4
- Parse error: parse error in /in/8sEAP on line 7
Process exited with code 255.
preferences:
301.36 ms | 401 KiB | 460 Q