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<?php $arr = [ 'plugin-folder/one' => 'one', 'plugin-folder/two' => 'two', 'muplugins/hey' => 'hey', 'vendor/laravel' => 'laravel' ]; $prefix = 'plugin-folder/'; $filtered = array_filter(array_keys($arr), function($key) use ($prefix) { return strpos($key, $prefix) === 0; }); var_dump($filtered);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [0]=> string(17) "plugin-folder/one" [1]=> string(17) "plugin-folder/two" }

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