phpjs/tests/optimized.js

php.js offers community built php functions in javascript

function strtotime(text, now) {
  if (!text) {
    return null;
  }
  text = text.trim().replace(/\s{2,}/g, ' ').replace(/[\t\r\n]/g, '').toLowerCase();
  var parsed;
  if (text === 'now') {
    return now === null || isNaN(now) ? (new Date).getTime() / 1E3 | 0 : now | 0;
  }else {
    if (!isNaN(parse = Date.parse(text))) {
      return parse / 1E3 | 0;
    }
  }
  if (text === 'now') {
    return (new Date).getTime() / 1E3;
  }else {
    if (!isNaN(parsed = Date.parse(text))) {
      return parsed / 1E3;
    }
  }
  var match = text.match(/^(\d{2,4})-(\d{2})-(\d{2})(?:\s(\d{1,2}):(\d{2})(?::\d{2})?)?(?:\.(\d+)?)?$/);
  if (match) {
    var year = match[1] >= 0 && match[1] <= 69 ? +match[1] + 2E3 : match[1];
    return new Date(year, parseInt(match[2], 10) - 1, match[3], match[4] || 0, match[5] || 0, match[6] || 0, match[7] || 0) / 1E3;
  }
  var date = now ? new Date(now * 1E3) : new Date;
  var days = {'sun': 0, 'mon': 1, 'tue': 2, 'wed': 3, 'thu': 4, 'fri': 5, 'sat': 6};
  var ranges = {'yea': 'FullYear', 'mon': 'Month', 'day': 'Date', 'hou': 'Hours', 'min': 'Minutes', 'sec': 'Seconds'};
  function lastNext(type, range, modifier) {
    var day = days[range];
    if (typeof day !== 'undefined') {
      var diff = day - date.getDay();
      if (diff === 0) {
        diff = 7 * modifier;
      }else {
        if (diff > 0 && type === 'last') {
          diff -= 7;
        }else {
          if (diff < 0 && type === 'next') {
            diff += 7;
          }
        }
      }
      date.setDate(date.getDate() + diff);
    }
  }
  function process(val) {
    var split = val.split(' ');
    var type = split[0];
    var range = split[1].substring(0, 3);
    var typeIsNumber = /\d+/.test(type);
    var ago = split[2] === 'ago';
    var num = (type === 'last' ? -1 : 1) * (ago ? -1 : 1);
    if (typeIsNumber) {
      num *= parseInt(type, 10);
    }
    if (ranges.hasOwnProperty(range)) {
      return date['set' + ranges[range]](date['get' + ranges[range]]() + num);
    }else {
      if (range === 'wee') {
        return date.setDate(date.getDate() + num * 7);
      }
    }
    if (type === 'next' || type === 'last') {
      lastNext(type, range, num);
    }else {
      if (!typeIsNumber) {
        return false;
      }
    }
    return true;
  }
  var regex = '([+-]?\\d+\\s' + '(years?|months?|weeks?|days?|hours?|min|minutes?|sec|seconds?' + '|sun\\.?|sunday|mon\\.?|monday|tue\\.?|tuesday|wed\\.?|wednesday' + '|thu\\.?|thursday|fri\\.?|friday|sat\\.?|saturday)|(last|next)\\s' + '(years?|months?|weeks?|days?|hours?|min|minutes?|sec|seconds?' + '|sun\\.?|sunday|mon\\.?|monday|tue\\.?|tuesday|wed\\.?|wednesday' + '|thu\\.?|thursday|fri\\.?|friday|sat\\.?|saturday))(\\sago)?';
  match = text.match(new RegExp(regex, 'gi'));
  if (!match) {
    return false;
  }
  for (var i = 0, len = match.length; i < len; i++) {
    if (!process(match[i])) {
      return false;
    }
  }
  return date.getTime() / 1E3;
}
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