<code>//随机合并两个数组元素，保持原有数据的排序不变（即各个数组的元素在合并后的数组中排序与自身原来一致）function shuffleMergeArray() {    $mergeArray = array();    $sum = count($array1) + count($array2);    for ($k = $sum; $k > 0; $k--) {        $number = mt_rand(1, 2);        if ($number == 1) {            $mergeArray[] = $array2 ? array_shift($array2) : array_shift($array1);        } else {            $mergeArray[] = $array1 ? array_shift($array1) : array_shift($array2);        }    }    return $mergeArray;}</code>

<code>合并前的数组：$array1 = array(1, 2, 3, 4);$array2 = array('a', 'b', 'c', 'd', 'e');合并后的数据：$mergeArray = array (  0 => 'a',  1 => 1,  2 => 'b',  3 => 2,  4 => 'c',  5 => 'd',  6 => 3,  7 => 4,  8 => 'e',)</code>