I wanted to check for matching values in multiple arrays, so I made a multi-dimensional array by pushing them into $array and then wrote this line of code:
$result = call_user_func_array('array_intersect', $array);
I am getting the result I want, but I am always getting this notice on that particular line of code:
Notice: Array to string conversion
Wondering what's causing this. Hope someone can enlighten me.
Your arrays (the first-level items inside $array) themselves contain arrays. This is unsupported by array_intersect, because it treats the array items as strings for purposes of determining equality:
Note: Two elements are considered equal if and only if
(string) $elem1 === (string) $elem2. In words: when the string representation is the same.
I can't say definitely without knowing what exactly you are trying to do, but a possible solution is to use array_uintersect instead which will allow you to specify in code how to compare items without necessarily casting them to string.
