php json_encode

URLDecoder.decode(String s, String enc) 

使用指定的编码机制对 application/x-www-form-urlencoded 字符串解码。 

<?php
$array1 = array("color" => "red", 2, 4);
$array2 = array("a", "b", "color" => "green", "shape" => "trapezoid", 4);
$result = array_merge($array1, $array2);
print_r($result);
?>
以上例程会输出：

Array
(
    [color] => green
    [0] => 2
    [1] => 4
    [2] => a
    [3] => b
    [shape] => trapezoid
    [4] => 4
)

http://wanxw2001.iteye.com/blog/1570339

http://www.php.net/manual/zh/function.array-merge.php