Function: array_intersect version 15

Function:
Description: Returns the entries of arr1 that have values which are present in all the other arguments.
Version:
Status: latest
Date: 2011-12-20 04:33
Summary: Import from phpjs.
Programmer: jj5
Code
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function array_intersect (arr1) {
    // http://jsphp.co/jsphp/fn/view/array_intersect
    // +   original by: Brett Zamir (http://brett-zamir.me)
    // %        note 1: These only output associative arrays (would need to be
    // %        note 1: all numeric and counting from zero to be numeric)
    // *     example 1: $array1 = {'a' : 'green', 0:'red', 1: 'blue'};
    // *     example 1: $array2 = {'b' : 'green', 0:'yellow', 1:'red'};
    // *     example 1: $array3 = ['green', 'red'];
    // *     example 1: $result = array_intersect($array1, $array2, $array3);
    // *     returns 1: {0: 'red', a: 'green'}
    var retArr = {},
        argl = arguments.length,
        arglm1 = argl - 1,
        k1 = '',
        arr = {},
        i = 0,
        k = '';

    arr1keys: for (k1 in arr1) {
        arrs: for (i = 1; i < argl; i++) {
            arr = arguments[i];
            for (k in arr) {
                if (arr[k] === arr1[k1]) {
                    if (i === arglm1) {
                        retArr[k1] = arr1[k1];
                    }
                    // If the innermost loop always leads at least once to an equal value, continue the loop until done
                    continue arrs;
                }
            }
            // If it reaches here, it wasn't found in at least one array, so try next value
            continue arr1keys;
        }
    }

    return retArr;
}
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