@ 2019-02-01T18:54:04Z <?php
$a = [
['a'=>'bla'],
['b'=>'test'],
['a'=>'foo'],
['c'=>'bar']
];
$b = [];
foreach ($a as $v) {
$k = array_key_first($v);
$b[$k][] = $v[$k];
}
var_dump($b);
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Output for 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 - 8.3.4 , 8.3.6 array(3) {
["a"]=>
array(2) {
[0]=>
string(3) "bla"
[1]=>
string(3) "foo"
}
["b"]=>
array(1) {
[0]=>
string(4) "test"
}
["c"]=>
array(1) {
[0]=>
string(3) "bar"
}
}
Output for 8.3.5 Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
array(3) {
["a"]=>
array(2) {
[0]=>
string(3) "bla"
[1]=>
string(3) "foo"
}
["b"]=>
array(1) {
[0]=>
string(4) "test"
}
["c"]=>
array(1) {
[0]=>
string(3) "bar"
}
}
Output for 7.0.0 - 7.0.33 , 7.1.0 - 7.1.32 , 7.2.0 - 7.2.33 Fatal error: Uncaught Error: Call to undefined function array_key_first() in /in/Eo1f9:10
Stack trace:
#0 {main}
thrown in /in/Eo1f9 on line 10
Process exited with code 255 . Output for 5.4.0 - 5.4.45 , 5.5.0 - 5.5.38 , 5.6.0 - 5.6.40 Fatal error: Call to undefined function array_key_first() in /in/Eo1f9 on line 10
Process exited with code 255 . 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/Eo1f9 on line 2
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/Eo1f9 on line 2
Process exited with code 255 . Output for 4.3.2 - 4.3.4 Parse error: parse error in /in/Eo1f9 on line 2
Process exited with code 255 . preferences:dark mode live preview
347.1 ms | 401 KiB | 447 Q