拼接造成的数组问题

Question

array('1557532655','3979953540','3696488675','2880436052','2746885203','2534670983','2941686393','4332391923','5014015371')上面是我拼接出来的一个字符串，是数组的形式，但其实它真的是一个字符船，我需要用array_diff函数比较两个这样的字符串，如何让PHP认为这个字符串是个数组？

Answer 1

eval$s1 = "array('1557532655','3979953540','3696488675','2880436052','2746885203','2534670983','2941686393','4332391923','5014015371')";$s2 = "array('1550000000','3979953540','3696488675','2880436052','2746885203','2534670983','2941686393','4332391923','5014015371')";$p = array_diff(eval"return $s1;"), eval("return $s2;"));

Answer 2

$s1 = "array('1557532655','3979953540','3696488675','2880436052','2746885203','2534670983','2941686393','4332391923','5014015371')";$s2 = "array('1550000000','3979953540','3696488675','2880436052','2746885203','2534670983','2941686393','4332391923','5014015371')";$p = array_diff(eval("return $s1;"), eval("return $s2;"));求分