How to convert time to timestamp in php

In PHP, you can use the strtotime function to convert time into a timestamp. The syntax is "strtotime(time,now);". The parameter time represents the date and time string, and the parameter now is used to calculate the return value. timestamp.

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strtotime() function describes the date or time of any English text Resolves as a Unix timestamp (number of seconds since January 1 1970 00:00:00 GMT).

Note: If the year representation uses a two-digit format, values ​​0-69 will be mapped to 2000-2069, and values ​​70-100 will be mapped to 1970-2000.

Note: Please note that for dates in m/d/y or d-m-y format, if the separator is a slash (/), the American m/d/y format is used. If the delimiter is a dash (-) or a dot (.), the European d-m-y format is used. To avoid potential errors, you should use YYYY-MM-DD format whenever possible or use the date_create_from_format() function.

Syntax

strtotime(time,now);

Parameters

time is required. Specifies a date/time string.

now Optional. Specifies the timestamp used to calculate the return value. If this parameter is omitted, the current time is used.

Example:

<?php
echo(strtotime("now") . "<br>");
echo(strtotime("5 September 2016") . "<br>");
echo(strtotime("+5 hours") . "<br>");
echo(strtotime("+1 week") . "<br>");
echo(strtotime("+1 week 3 days 7 hours 5 seconds") . "<br>");
echo(strtotime("next Monday") . "<br>");
echo(strtotime("last Sunday"));
?>

The running result is:

1604901378
1473004800
1604919378
1605506178
1605790583
1605456000
1604764800

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