How to convert PHP time to JavaScript timestamp

PHP Time Conversion JS Timestamp

When we use JavaScript to perform time operations, we often need to convert the timestamp in different programming languages, because different programming languages ​​may process time in different ways. different. In this article, we will explore how to convert PHP time to JavaScript timestamp.

How to express time in PHP

In PHP, we can use timestamp to represent a specific point in time. The timestamp is usually the number of seconds since January 1, 1970 00:00:00 UTC (Coordinated Universal Time). You can use the time() function in PHP to get the current timestamp:

$timestamp = time(); //获取当前时间戳

In addition, we can also use the date() function to format the timestamp into the time string we need:

$dateStr = date('Y-m-d H:i:s', time()); //格式化当前时间为字符串

How time is expressed in JavaScript

In JavaScript, the timestamp is also calculated from 00:00:00 UTC on January 1, 1970, but its unit is milliseconds. We can use a Date object to represent a specific point in time, or we can use the getTime() method to get the current timestamp:

var timestamp = (new Date()).getTime(); //获取当前时间戳

Convert PHP timestamp to JavaScript timestamp

If we need To convert a timestamp in PHP to a timestamp in JavaScript, you can multiply the timestamp in PHP by 1000 to ensure consistent units. In JavaScript, we can convert the timestamp into a Date object using new Date(), and then use the getTime() method to obtain the timestamp. The following is the specific code implementation:

// PHP
$phpTimestamp = time();
$jsTimestamp = $phpTimestamp * 1000; //将PHP中的时间戳转换为JavaScript中的时间戳

// JavaScript
var jsDate = new Date(<?php  echo $jsTimestamp ?>);
var jsTimestamp = jsDate.getTime(); //获取JavaScript中的时间戳

Convert JavaScript timestamp to PHP timestamp

If we need to convert the timestamp in JavaScript to a timestamp in PHP, we can convert the timestamp in JavaScript to a timestamp in PHP. The timestamp is divided by 1000 to ensure consistent units. In PHP, we can use the date() function to convert a formatted time string into a timestamp. The following is the specific code implementation:

// JavaScript
var jsTimestamp = (new Date()).getTime();
var phpTimestamp = Math.floor(jsTimestamp / 1000); //将JavaScript中的时间戳转换为PHP中的时间戳

// PHP
$phpDateStr = date('Y-m-d H:i:s', $phpTimestamp); //将PHP中的时间戳转换为格式化的时间字符串
$jsTimestamp = strtotime($phpDateStr) * 1000; //将格式化的时间字符串转换为JavaScript中的时间戳

Conclusion

In the actual development process, we often need to convert time in different programming languages. This is one of the basic skills that developers must master. one. This article introduces in detail how to convert PHP time to JavaScript timestamp and how to convert JavaScript timestamp to PHP timestamp through examples. I believe it will be helpful for beginners to learn and understand time conversion.

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