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<?php function printAll($a, &$output, $prefix = '') { if (!is_array($a) && !is_object($a)) { $prefix = rtrim($prefix, '/'); $output[] = $prefix . ' => ' . $a. "\n"; return; } foreach($a as $k => $v) { $tmp = $prefix; $tmp .= $k . "/"; printAll($v, $output, $tmp); } } $json_str = '{ "one": { "two": 3, "four": [ 5,6,7] }, "eight": { "nine": { "ten":11 } } }'; $object = json_decode($json_str); $res = array(); printAll($object, $res); var_dump($res);
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array(5) { [0]=> string(13) "one/two => 3 " [1]=> string(16) "one/four/0 => 5 " [2]=> string(16) "one/four/1 => 6 " [3]=> string(16) "one/four/2 => 7 " [4]=> string(21) "eight/nine/ten => 11 " }

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105.08 ms | 408 KiB | 5 Q