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Use the inbuilt ES6 function some() to iterate through each and every element of first array and to test the array. Use the inbuilt function includes() with second array to check if element exist in the first array or not. If element exist then return true else return false.
A multidimensional array is an array containing one or more arrays. PHP supports multidimensional arrays that are two, three, four, five, or more levels deep. However, arrays more than three levels deep are hard to manage for most people.
To check if all values in an array are equal:Use the Array. every() method to iterate over the array. Check if each array element is equal to the first one. The every method only returns true if the condition is met for all array elements.
Use the sort() function to sort an array element and then use the equality operator. Use array operator ( == ) in case of Associative array.
The previous answers are all doing more work than they need to. Just use array_diff. This is the simplest way to do it:
$containsAllValues = !array_diff($search_this, $all);
That's all you have to do.
Look at array_intersect().
$containsSearch = count(array_intersect($search_this, $all)) === count($search_this);
A bit shorter with array_diff
$musthave = array('a','b');
$test1 = array('a','b','c');
$test2 = array('a','c');
$containsAllNeeded = 0 == count(array_diff($musthave, $test1));
// this is TRUE
$containsAllNeeded = 0 == count(array_diff($musthave, $test2));
// this is FALSE
I think you're looking for the intersect function
array array_intersect ( array $array1 , array $array2 [, array $ ... ] )
array_intersect() returns an array containing all values of array1 that are
present in all the arguments. Note that keys are preserved.
http://www.php.net/manual/en/function.array-intersect.php
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