How to write a function array_replace_recursive to support old PHP version like PHP 5.2.
The following codes will array_replace_recursive function for PHP 5.2 or older
<?php if (!function_exists('array_replace_recursive')){ function array_replace_recursive($base, $replacements){ foreach (array_slice(func_get_args(), 1) as $replacements) { $bref_stack = array(&$base); $head_stack = array($replacements); do { end($bref_stack); $bref = &$bref_stack[key($bref_stack)]; $head = array_pop($head_stack); unset($bref_stack[key($bref_stack)]); foreach (array_keys($head) as $key) { if (isset($key, $bref) && is_array($bref[$key]) && is_array($head[$key])) { $bref_stack[] = &$bref[$key]; $head_stack[] = $head[$key]; } else { $bref[$key] = $head[$key]; } } } while(count($head_stack)); } return $base; } }