locutus/esm/php/array/array_diff.js

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

import { entriesOfPhpAssoc, toPhpArrayObject } from "../_helpers/_phpTypes.js";
export function array_diff(arr1, ...arrays) {
    //  discuss at: https://locutus.io/php/array_diff/
    // original by: Kevin van Zonneveld (https://kvz.io)
    // improved by: Sanjoy Roy
    //  revised by: Brett Zamir (https://brett-zamir.me)
    //   example 1: array_diff(['Kevin', 'van', 'Zonneveld'], ['van', 'Zonneveld'])
    //   returns 1: {0:'Kevin'}
    const retArr = {};
    if (arrays.length < 1) {
        return retArr;
    }
    const arr1Object = toPhpArrayObject(arr1);
    arr1keys: for (const [k1, arr1Value] of entriesOfPhpAssoc(arr1Object)) {
        for (const nextArray of arrays) {
            const arr = toPhpArrayObject(nextArray);
            for (const [, value] of entriesOfPhpAssoc(arr)) {
                if (value === arr1Value) {
                    continue arr1keys;
                }
            }
        }
        retArr[k1] = arr1Value;
    }
    return retArr;
}