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<?php $parameters = ['foo' => 'bar', 'baz' => ['zim', 'zam']]; $pairs = []; $join = function($value, $name, &$output) { $output[] = "$name=$value"; }; function walk(array $input, array &$output, callable $callback) { array_walk_recursive($input, function(&$value, $name) use (&$output, $callback) { $callback($value, $name, $output); }); } walk($parameters, $pairs, $join); var_dump($pairs, $parameters);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> string(7) "foo=bar" [1]=> string(5) "0=zim" [2]=> string(5) "1=zam" } array(2) { ["foo"]=> string(3) "bar" ["baz"]=> array(2) { [0]=> string(3) "zim" [1]=> string(3) "zam" } }

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