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Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
$a = ["group.phantom", "group.god", "group.imperator", "group.general", "group.hermit", "group.soldier"];
$b = [
[
"permission" => "group.default"
],
[
"permission" => "group.phantom"
],
[
"permission" => "group.general"
]
];
$c = array_column($b, 'permission');
echo json_encode(reset(array_intersect($a, $c)));