GMT DateTimeをPHP DateFormateに基づくローカルシステム日付時刻に変換

Question

すべてのGMT/UTC TimeZoneをローカルシステムTimeZoneに変換する方法クラスまたは.system_datetimeに基づいており、data-gmt_datetimeとdata-datetime_formate

HTML戻り出力

<label class="grid_label_view system_datetime" data-datetime_formate="M d, Y h:i A" data-gmt_datetime="2016-08-27 06:57:00">Aug 27, 2016 06:57 AM</label> 

<label class="grid_label_view system_datetime" data-datetime_formate="M d, Y h:i A" data-gmt_datetime="2016-08-27 07:14:00">Aug 27, 2016 07:14 AM</label> 

このユーザーのローカルシステムのタイムゾーンでGMT日付時間表示上記の属性。

Answer 1

システム時刻に日付時刻を変換します。

HTML

<label class="grid_label_view system_datetime" data-datetime_formate="M d, Y H:i" data-gmt_datetime="2016-08-27 07:14:00">Aug 27, 2016 06:57</label>  

<label class="grid_label_view system_datetime" data-datetime_formate="M d, Y h:i A" data-gmt_datetime="2016-08-27 06:57:00">Aug 27, 2016 06:57 AM</label> 

<label class="grid_label_view system_datetime" data-datetime_formate="M d, Y h:i A" data-gmt_datetime="2016-08-27 07:14:00">Aug 27, 2016 07:14 AM</label> 

はJavaScript：

$(".system_datetime[data-gmt_datetime][data-datetime_formate]").each(function() { 
    var gmt_datetime = $(this).attr("data-gmt_datetime"); 
    var gmt_datetime_formate = $(this).attr("data-datetime_formate"); 
    var js_gmt_datetime = new Date(gmt_datetime + ' GMT'); 

    var current_gmt_time = new Date(); 

    var datetime_timezoon_string = js_gmt_datetime.toString().match(/\(([A-Za-z\s].*)\)/)[1]; 

    console.log("gmt_datetime:" + gmt_datetime + ",gmt_datetime_formate:" + gmt_datetime_formate); 
    var datetime_year_4_integer = js_gmt_datetime.getFullYear().toString(); 
    console.log("datetime_year_4_integer:" + datetime_year_4_integer); 
    var datetime_year_2_integer = datetime_year_4_integer.toString().slice(-2); 
    var datetime_month_integer = (js_gmt_datetime.getMonth() + 1); 
    var datetime_month_full_string = 'NONE'; 
    var datetime_month_short_string = 'NONE'; 
    switch (datetime_month_integer) { 
     case 1: 
      datetime_month_full_string = "January"; 
      datetime_month_short_string = "Jan"; 
      break; 
     case 2: 
      datetime_month_full_string = "February"; 
      datetime_month_short_string = "Feb"; 
      break; 
     case 3: 
      datetime_month_full_string = "March"; 
      datetime_month_short_string = "Mar"; 
      break; 
     case 4: 
      datetime_month_full_string = "April"; 
      datetime_month_short_string = "Apr"; 
      break; 
     case 5: 
      datetime_month_full_string = "May"; 
      datetime_month_short_string = "May"; 
      break; 
     case 6: 
      datetime_month_full_string = "June"; 
      datetime_month_short_string = "Jun"; 
      break; 
     case 7: 
      datetime_month_full_string = "July"; 
      datetime_month_short_string = "Jul"; 
      break; 
     case 8: 
      datetime_month_full_string = "August"; 
      datetime_month_short_string = "Aug"; 
      break; 
     case 9: 
      datetime_month_full_string = "September"; 
      datetime_month_short_string = "Sep"; 
      break; 
     case 10: 
      datetime_month_full_string = "October"; 
      datetime_month_short_string = "Oct"; 
      break; 
     case 11: 
      datetime_month_full_string = "November"; 
      datetime_month_short_string = "Nov"; 
      break; 
     case 12: 
      datetime_month_full_string = "December"; 
      datetime_month_short_string = "Dec"; 
      break; 
    } 
    var datetime_day_integer = js_gmt_datetime.getDate().toString(); 
    var datetime_hours_24_integer = js_gmt_datetime.getHours().toString(); 
    var datetime_hours_12_integer = js_gmt_datetime.getHours().toString(); 

    if (js_gmt_datetime.getHours() > 12) { 
     var datetime_hours_12_integer = "" + (js_gmt_datetime.getHours() - 12); 
    } 
    var datetime_minutes_integer = js_gmt_datetime.getMinutes().toString(); 
    var datetime_seconds_integer = js_gmt_datetime.getSeconds().toString(); 

    var datetime_small_am_pm_string = datetime_hours_24_integer >= 12 ? 'pm' : 'am'; 
    var datetime_caps_am_pm_string = datetime_hours_24_integer >= 12 ? 'PM' : 'AM'; 

    var system_datetime_formate = ''; 

    datetime_day_integer = two_digit_convert(datetime_day_integer); 
    datetime_hours_24_integer = two_digit_convert(datetime_hours_24_integer); 
    datetime_hours_12_integer = two_digit_convert(datetime_hours_12_integer); 
    datetime_minutes_integer = two_digit_convert(datetime_minutes_integer); 
    datetime_seconds_integer = two_digit_convert(datetime_seconds_integer); 

    for (var char_index = 0; char_index < gmt_datetime_formate.length; char_index++) { 

     switch (gmt_datetime_formate[char_index]) { 
      case 'd': 
       system_datetime_formate = system_datetime_formate.concat(datetime_day_integer); 
       break; 
      case 'D': 
       system_datetime_formate = system_datetime_formate.concat("D"); 
       break; 
      case 'j': 
       system_datetime_formate = system_datetime_formate.concat(datetime_day_integer.replace(/^0+/, '')); 
       break; 
      case 'F': 
       system_datetime_formate = system_datetime_formate.concat(datetime_month_full_string); 
       break; 
      case 'm': 
       system_datetime_formate = system_datetime_formate.concat(datetime_month_integer); 
       break; 
      case 'M': 
       system_datetime_formate = system_datetime_formate.concat(datetime_month_short_string); 
       break; 
      case 'n': 
       system_datetime_formate = system_datetime_formate.concat(datetime_month_integer.replace(/^0+/, '')); 
       break; 
      case 'Y': 
       system_datetime_formate = system_datetime_formate.concat(datetime_year_4_integer); 
       break; 
      case 'y': 
       system_datetime_formate = system_datetime_formate.concat(datetime_year_2_integer); 
       break; 
      case 'g': 
       system_datetime_formate = system_datetime_formate.concat(datetime_hours_12_integer.replace(/^0+/, '')); 
       break; 
      case 'G': 
       system_datetime_formate = system_datetime_formate.concat(datetime_hours_24_integer.replace(/^0+/, '')); 
       break; 
      case 'h': 
       system_datetime_formate = system_datetime_formate.concat(datetime_hours_12_integer); 
       break; 
      case 'H': 
       system_datetime_formate = system_datetime_formate.concat(datetime_hours_24_integer); 
       break; 
      case 'i': 
       system_datetime_formate = system_datetime_formate.concat(datetime_minutes_integer); 
       break; 
      case 'T': 
       system_datetime_formate = system_datetime_formate.concat(datetime_timezoon_string); 
       break; 
      case 'A': 
       system_datetime_formate = system_datetime_formate.concat(datetime_caps_am_pm_string); 
       break; 
      case 'a': 
       system_datetime_formate = system_datetime_formate.concat(datetime_small_am_pm_string); 
       break; 
      default: 
       system_datetime_formate = system_datetime_formate.concat(gmt_datetime_formate[char_index]); 

     } 
    } 
    $(this).html(system_datetime_formate); 
}); 

function two_digit_convert(n) { 
    return n > 9 ? "" + n : "0" + n; 
} 

の