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function array_intersect_uassoc () {
    // Returns the entries of arr1 that have values which are present in all the other arguments. Keys are used to do more restrictive check and they are compared by using an user-supplied callback.  
    // 
    // version: 909.322
    // discuss at: http://phpjs.org/functions/array_intersect_uassoc    // +   original by: Brett Zamir (http://brett-zamir.me)
    // *     example 1: $array1 = {a: 'green', b: 'brown', c: 'blue', 0: 'red'}
    // *     example 1: $array2 = {a: 'GREEN', B: 'brown', 0: 'yellow', 1: 'red'}
    // *     example 1: array_intersect_uassoc($array1, $array2, function (f_string1, f_string2){var string1 = (f_string1+'').toLowerCase(); var string2 = (f_string2+'').toLowerCase(); if (string1 > string2) return 1; if (string1 == string2) return 0; return -1;});
    // *     returns 1: {b: 'brown'}    var arr1 = arguments[0], retArr = {}, cb = arguments[arguments.length-1];
    var k1 = '', i = 1, arr = {}, k = '';
 
    cb = (typeof cb === 'string') ? this.window[cb] : (cb instanceof Array) ? this.window[cb[0]][cb[1]] : cb;
     arr1keys:
    for (k1 in arr1) {
        arrs:
        for (i = 1; i < arguments.length-1; i++) {
            arr = arguments[i];            for (k in arr) {
                if (arr[k] === arr1[k1] && cb(k, k1) === 0 ) {
                    if (i === arguments.length-2) {
                        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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$array1 = {a: 'green', b: 'brown', c: 'blue', 0: 'red'}
$array2 = {a: 'GREEN', B: 'brown', 0: 'yellow', 1: 'red'}
array_intersect_uassoc($array1, $array2, function (f_string1, f_string2){var string1 = (f_string1+'').toLowerCase(); var string2 = (f_string2+'').toLowerCase(); if (string1 > string2) return 1; if (string1 == string2) return 0; return -1;});

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{b: 'brown'}