View: uasort

Function:
Description: Sort an array with a user-defined comparison function and maintain index association.
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function uasort (inputArr, sorter) {
    // http://jsphp.co/jsphp/fn/view/uasort
    // +   original by: Brett Zamir (http://brett-zamir.me)
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // +   improved by: Theriault
    // %        note 1: This function deviates from PHP in returning a copy of the array instead
    // %        note 1: of acting by reference and returning true; this was necessary because
    // %        note 1: IE does not allow deleting and re-adding of properties without caching
    // %        note 1: of property position; you can set the ini of "phpjs.strictForIn" to true to
    // %        note 1: get the PHP behavior, but use this only if you are in an environment
    // %        note 1: such as Firefox extensions where for-in iteration order is fixed and true
    // %        note 1: property deletion is supported. Note that we intend to implement the PHP
    // %        note 1: behavior by default if IE ever does allow it; only gives shallow copy since
    // %        note 1: is by reference in PHP anyways
    // *     example 1: fruits = {d: 'lemon', a: 'orange', b: 'banana', c: 'apple'};
    // *     example 1: fruits = uasort(fruits, function (a, b) { if (a > b) {return 1;}if (a < b) {return -1;} return 0;});
    // *     results 1: fruits == {c: 'apple', b: 'banana', d: 'lemon', a: 'orange'}
    var valArr = [],
        tempKeyVal, tempValue, ret, k = '',
        i = 0,
        strictForIn = false,
        populateArr = {};

    if (typeof sorter === 'string') {
        sorter = this[sorter];
    } else if (Object.prototype.toString.call(sorter) === '[object Array]') {
        sorter = this[sorter[0]][sorter[1]];
    }

    // BEGIN REDUNDANT
    this.php_js = this.php_js || {};
    this.php_js.ini = this.php_js.ini || {};
    // END REDUNDANT
    strictForIn = this.php_js.ini['phpjs.strictForIn'] && this.php_js.ini['phpjs.strictForIn'].local_value && this.php_js.ini['phpjs.strictForIn'].local_value !== 'off';
    populateArr = strictForIn ? inputArr : populateArr;


    for (k in inputArr) { // Get key and value arrays
        if (inputArr.hasOwnProperty(k)) {
            valArr.push([k, inputArr[k]]);
            if (strictForIn) {
                delete inputArr[k];
            }
        }
    }
    valArr.sort(function (a, b) {
        return sorter(a[1], b[1]);
    });
    
    for (i = 0; i < valArr.length; i++) { // Repopulate the old array
        populateArr[valArr[i][0]] = valArr[i][1];
    }

    return strictForIn || populateArr;
}
Comment on uasort version 74
Tests
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