PHP cross-time zone (UTC time) application solution_PHP tutorial

1. Set the program’s internal time zone to UTC time. (UTC can also be called GMT)
PHP settings:
date_default_timezone_set("UTC");
Yii settings:
config Add: 'timeZone'=>'UTC' to /main.php,
After this setting, the time generated by PHP is basically UTC time. For example:
//Output the current UTC time
date ("Y-m-d H:i:s");

2. Store UTC time in the database .
can be controlled with PHP or by setting the database time zone.

3. The time sent by the server to the front-end is in UTC time format , which is converted to local time by JS and then displayed. JS internal data is separated from the display data.
JS conversion Function reference:

Copy code The code is as follows:

/**
* Convert UTC time to local time
* @param string utcTime utc time string format:'Y-m-d H:i:s'
* @return string Local time string format:'Y-m-d H: i:s'
*/
function utcToLocal(utcTime ) {
if(utcTime==='0000-00-00 00:00:00' || utcTime===null || utcTime==='' || utcTime===undefined)
return utcTime;
var locTime = new Date(); //local time object
utcTime=utcTime.replace("-", "/").replace("-", "/"); //Firefox Incompatible with '-' separated date
//Parse string and local time assignment
locTime.setTime(Date.parse(utcTime)-locTime.getTimezoneOffset()*60000);
//Local time character String formatting
var year = locTime.getFullYear();
var month = preZero(locTime.getMonth()+1);
var date = preZero(locTime.getDate());
var hour = preZero(locTime.getHours());
var minute = preZero(locTime.getMinutes());
var second = preZero(locTime.getSeconds());
return year+'-' +month+'-'+date+' '+hour+':'+minute+':'+second;
}
/**
* Convert local time to UTC time
* @param string locTime utc time string format:'Y-m-d H:i:s'
* @return string Local time string format:'Y-m-d H: i:s'
*/
function localToUtc(locTime) {
if (locTime==='0000-00-00 00:00:00' || locTime==='0000-00-00' || locTime===null || locTime==='' || locTime== =undefined)
return locTime;
var tmpTime = new Date();
var utcTime = new Date();
locTime=locTime.replace("-", "/").replace ("-", "/"); //Firefox is not compatible with '-' separated dates
//Parse string
tmpTime.setTime(Date.parse(locTime));
if(locTime. length>10) {
var year = tmpTime.getUTCFulYear();
var month = preZero(tmpTime.getUTCMonth()+1);
var date = preZero(tmpTime.getUTCDate());
var hour = preZero(tmpTime.getUTCHours());
var minute = preZero(tmpTime.getUTCMinutes());
var second = preZero(tmpTime.getUTCSeconds());
return year+' -'+month+'-'+date +' '+hour+':'+minute+':'+second;
} else {
//Set the date and keep the local time (for UTC conversion)
utcTime.setFullYear(tmpTime.getFullYear());
utcTime.setMonth(tmpTime.getMonth()); utcTime.setMonth(tmpTime.getMonth());//?If it is not repeated, the assignment is invalid
utcTime.setDate(tmpTime.getDate());
var year = utcTime.getUTCFulYear();
var month = preZero(utcTime.getUTCMonth()+1);
var date = preZero(utcTime. getUTCDate());
return year+'-'+month+'-'+date;
}
}
//Add leading 0 to a single number
function preZero(str) {
return str.toString().length<2 ? '0'+str : str;
}

http://www.bkjia.com/PHPjc/326372.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/326372.htmlTechArticle1. Set the program’s internal time zone to UTC time. (UTC can also be called GMT) PHP settings: date_default_timezone_set(" UTC"); Yii settings: Add: 'timeZone'='UTC' in config/main.php, after setting like this...