Javascript array_combine : Arrays : PHP functions in JavaScript JAVASCRIPT TUTORIALS

function array_combine( keys, values ) {
    // Creates an array by using the elements of the first parameter as keys and the elements of the second as the corresponding values  
    // 
    // version: 810.114
    // discuss at: http://phpjs.org/functions/array_combine
    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // *     example 1: array_combine([0,1,2], ['kevin','van','zonneveld']);
    // *     returns 1: {0: 'kevin', 1: 'van', 2: 'zonneveld'}
   
    var new_array = {}, keycount=keys.length, i;

    // input sanitation
    if( !keys || !values || keys.constructor !== Array || values.constructor !== Array ){
        return false;
    }

    // number of elements does not match
    if(keycount != values.length){
        return false;
    }

    for ( i=0; i < keycount; i++ ){
        new_array[keys[i]] = values[i];
    }

    return new_array;
}