<?php
$a = ['baz' => 7];
$b = (string) $a['foo'] ?? 'bar';
$c = (string) $a['baz'] ?? 'some thing else';
$d = (string) ($a['foo'] ?? 'bar');
var_dump($b, $c, $d);
- Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
- Warning: Undefined array key "foo" in /in/WogF7 on line 6
string(0) ""
string(1) "7"
string(3) "bar"
- Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.5 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
- Notice: Undefined index: foo in /in/WogF7 on line 6
string(0) ""
string(1) "7"
string(3) "bar"
- Output for 7.3.32 - 7.3.33
- string(0) ""
string(1) "7"
string(3) "bar"
- Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
- Parse error: syntax error, unexpected '?' in /in/WogF7 on line 6
Process exited with code 255.
preferences:
143.56 ms | 410 KiB | 5 Q