<?php
$foobar = "baz";
$a = compact('foobar');
var_dump($a);
$varname = array_keys($a);
echo $varname;
- Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- array(1) {
["foobar"]=>
string(3) "baz"
}
Warning: Array to string conversion in /in/C130M on line 7
Array
- Output for 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 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
- array(1) {
["foobar"]=>
string(3) "baz"
}
Notice: Array to string conversion in /in/C130M on line 7
Array
- 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, 7.3.32 - 7.3.33
- array(1) {
["foobar"]=>
string(3) "baz"
}
Array
preferences:
254.82 ms | 403 KiB | 308 Q