3v4l.org

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<?php $text = "field[a][2][b][0][c][1][field_name]=value"; parse_str($text, $result); print_r($result);
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.14, 8.4.1
Array ( [field] => Array ( [a] => Array ( [2] => Array ( [b] => Array ( [0] => Array ( [c] => Array ( [1] => Array ( [field_name] => value ) ) ) ) ) ) ) )
preferences:
54.98 ms | 409 KiB | 5 Q