locutus
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Locutus other languages' standard libraries to JavaScript for fun and educational purposes
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JavaScript
export function mktime(hour, minute, second, month, day, year) {
// discuss at: https://locutus.io/php/mktime/
// original by: Kevin van Zonneveld (https://kvz.io)
// improved by: baris ozdil
// improved by: Kevin van Zonneveld (https://kvz.io)
// improved by: FGFEmperor
// improved by: Brett Zamir (https://brett-zamir.me)
// input by: gabriel paderni
// input by: Yannoo
// input by: jakes
// input by: 3D-GRAF
// input by: Chris
// bugfixed by: Kevin van Zonneveld (https://kvz.io)
// bugfixed by: Kevin van Zonneveld (https://kvz.io)
// bugfixed by: Marc Palau
// bugfixed by: Brett Zamir (https://brett-zamir.me)
// revised by: Theriault (https://github.com/Theriault)
// note 1: The return values of the following examples are
// note 1: received only if your system's timezone is UTC.
// example 1: mktime(14, 10, 2, 2, 1, 2008)
// returns 1: 1201875002
// example 2: mktime(0, 0, 0, 0, 1, 2008)
// returns 2: 1196467200
// example 3: var $make = mktime()
// example 3: var $td = new Date()
// example 3: var $real = Math.floor($td.getTime() / 1000)
// example 3: var $diff = ($real - $make)
// example 3: $diff < 5
// returns 3: true
// example 4: mktime(0, 0, 0, 13, 1, 1997)
// returns 4: 883612800
// example 5: mktime(0, 0, 0, 1, 1, 1998)
// returns 5: 883612800
// example 6: mktime(0, 0, 0, 1, 1, 98)
// returns 6: 883612800
// example 7: mktime(23, 59, 59, 13, 0, 2010)
// returns 7: 1293839999
// example 8: mktime(0, 0, -1, 1, 1, 1970)
// returns 8: -1
const d = new Date();
const resolved = [
d.getHours(),
d.getMinutes(),
d.getSeconds(),
d.getMonth() + 1, // +1 to fix JS months.
d.getDate(),
d.getFullYear(),
];
const input = [hour, minute, second, month, day, year];
for (let i = 0; i < input.length; i++) {
const value = input[i];
if (typeof value !== 'undefined') {
const parsed = Number.parseInt(String(value), 10);
if (Number.isNaN(parsed)) {
return false;
}
resolved[i] = parsed;
}
}
// Map years 0-69 to 2000-2069 and years 70-100 to 1970-2000.
const normalizedYear = resolved[5] + (resolved[5] >= 0 ? (resolved[5] <= 69 ? 2e3 : resolved[5] <= 100 ? 1900 : 0) : 0);
// Set year, month (-1 to fix JS months), and date.
// !This must come before the call to setHours!
d.setFullYear(normalizedYear, resolved[3] - 1, resolved[4]);
// Set hours, minutes, and seconds.
d.setHours(resolved[0], resolved[1], resolved[2]);
const time = d.getTime();
// Divide milliseconds by 1000 to return seconds and drop decimal.
// Add 1 second if negative or it'll be off from PHP by 1 second.
return ((time / 1e3) >> 0) - Number(time < 0);
}