在php中比较两个数组并输出结果

Question

可能重复:
PHP比较数组

我必须在php中比较两个数组并打印输出,如果两个数组相同但可以以任何方式排序元素

即

$array1=array('a','p','p','l','e');
$array2=array('p','a','e','l');

--- This must return as success because all of the letters in array1 is there in array2

$array1=array('a','p','p','l','e','s');
$array2=array('p','a','e','l');

-- This must return false

$array1=array('a','p','p','l','e','s');
$array1=array('a','p','p','l','e','s');
-- This must return true

请帮忙

Answer 1

var_dump(sizeof(array_diff($array1, $array2)) === 0);

参考:http://php.net/manual/function.array-diff.php