locutus/esm/php/array/array_uintersect.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

import { resolveNumericComparator } from "../_helpers/_callbackResolver.js";
import { entriesOfPhpAssoc, isPhpCallableDescriptor, toPhpArrayObject, } from "../_helpers/_phpTypes.js";
export function array_uintersect(arr1, ...arraysAndCallback) {
    //  discuss at: https://locutus.io/php/array_uintersect/
    // original by: Brett Zamir (https://brett-zamir.me)
    // bugfixed by: Demosthenes Koptsis
    //   example 1: var $array1 = {a: 'green', b: 'brown', c: 'blue', 0: 'red'}
    //   example 1: var $array2 = {a: 'GREEN', B: 'brown', 0: 'yellow', 1: 'red'}
    //   example 1: array_uintersect($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: {a: 'green', b: 'brown', 0: 'red'}
    const retArr = {};
    const callback = arraysAndCallback.at(-1);
    if (typeof callback === 'undefined' || !isPhpCallableDescriptor(callback)) {
        throw new Error('array_uintersect(): Invalid callback');
    }
    const arrays = arraysAndCallback.slice(0, -1).map((value) => toPhpArrayObject(value));
    const valueComparator = resolveNumericComparator(callback, 'array_uintersect(): Invalid callback');
    const lastArrayIndex = arrays.length - 1;
    arr1keys: for (const [k1, arr1Value] of entriesOfPhpAssoc(arr1)) {
        arrs: for (const [i, arr] of arrays.entries()) {
            for (const [, arrValue] of entriesOfPhpAssoc(arr)) {
                if (valueComparator(arrValue, arr1Value) === 0) {
                    if (i === lastArrayIndex) {
                        retArr[k1] = arr1Value;
                    }
                    // 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;
}