How to convert time to number in php

php method to convert time into numbers: First create a PHP sample file; then enter the statement "echo strtotime("")" to convert time into numbers.

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The code is as follows:

echo strtotime ("2012-03-22");
//结果1332374400
//说明：返回2012年3月22日0点0分0秒时间戳
echo time();
//说明：获取当前时间的时间戳

Related introduction:

The strtotime() function parses any English text date or time description into a Unix timestamp (number of seconds since January 1 1970 00:00:00 GMT).

The time() function returns the number of seconds since the Unix epoch (January 1 1970 00:00:00 GMT).

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