locutus
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Locutus other languages' standard libraries to JavaScript for fun and educational purposes
48 lines (47 loc) • 1.76 kB
JavaScript
import { isObjectLike, toPhpArrayObject, } from "../_helpers/_phpTypes.js";
export function array_count_values(array) {
// discuss at: https://locutus.io/php/array_count_values/
// parity verified: PHP 8.3
// original by: Ates Goral (https://magnetiq.com)
// improved by: Michael White (https://getsprink.com)
// improved by: Kevin van Zonneveld (https://kvz.io)
// input by: sankai
// input by: Shingo
// bugfixed by: Brett Zamir (https://brett-zamir.me)
// example 1: array_count_values([ 3, 5, 3, "foo", "bar", "foo" ])
// returns 1: {3:2, 5:1, "foo":2, "bar":1}
// example 2: array_count_values({ p1: 3, p2: 5, p3: 3, p4: "foo", p5: "bar", p6: "foo" })
// returns 2: {3:2, 5:1, "foo":2, "bar":1}
// example 3: array_count_values([ true, 4.2, 42, "fubar" ])
// returns 3: {42:1, "fubar":1}
const tmpArr = {};
const _countValue = function (target, value) {
let normalized = '';
if (typeof value === 'number') {
if (Math.floor(value) !== value) {
return;
}
normalized = String(value);
}
else if (typeof value !== 'string') {
return;
}
else {
normalized = value;
}
if (normalized in target && Object.hasOwn(target, normalized)) {
target[normalized] = (target[normalized] ?? 0) + 1;
}
else {
target[normalized] = 1;
}
};
if (!isObjectLike(array)) {
return tmpArr;
}
const source = toPhpArrayObject(array);
for (const value of Object.values(source)) {
_countValue(tmpArr, value);
}
return tmpArr;
}