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@ 2021-02-26T15:00:00Z

<?php

$foo = array(
    "a" => 1,
    "b" => 2,
    "c" => 3,
    "d" => 4,
);
$foo = ['c' => $foo['c']] + $foo;
var_export($foo);

echo "\n---\n";

$bar = array(
    "a" => 1,
    "b" => 2,
    "d" => 4,
);
if (array_key_exists('c', $bar)) {
    $bar = ['c' => $bar['c']] + $bar;
}
var_export($bar);

Output
Performance
VLD
References
Branches

var_export: documentation ( source)

preferences:dark modelive previewkey bindings

31.91 ms | 404 KiB | 5 Q