- ob_get_clean: documentation ( source)
- ob_start: documentation ( source)
- preg_match: documentation ( source)
- debug_zval_dump: documentation ( source)
- array_replace_recursive: documentation ( source)
- json_encode: documentation ( source)
<?php
function get_refcount($v) {
ob_start();
debug_zval_dump($v);
$m = null;
preg_match('@refcount\(\d+\)@', ob_get_clean(), $m);
return $m[0];
}
function func(&$data) {
foreach ($data as $key => $value) {
if (is_array($value)) {
func($data[$key]);
}
}
}
$data = [
['k' => [0]],
['k' => [1]],
];
echo get_refcount($data[1]['k'])."\n"; //refcount(2)
func($data);
echo get_refcount($data[1]['k'])."\n"; //refcount(3)
array_replace_recursive($data[0], $data[1]);
echo json_encode($data);