PHP Functions Essential Reference

array_merge_recursive

array array_merge_recursive(mixed value_1, mixed value_2, mixed ...) 

value_1	Base array or value
value_2	Next value or array to merge
...	Further values or arrays to be merged

Recursively merges all passed values into one array.

Returns:

Array containing the results of merging all passed values; NULL on failure

Description:

This function is like array_merge() except that identically-keyed nested arrays are recursed through and merged with each other, just as though array_merge() had been called on them.

Version:

PHP 4 since 4.0.1

See also:

array_merge() 

Example:

Recursively merge arrays

$ax = array("a" => "alpha", "b" => "bravo", "z" => array("c" => "charlie", "d" => "delta")); $ay = array("t" => "tango", "u" => ...