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A brief analysis of how to convert php timestamp to seconds
- PHPzOriginal
- 2023-03-29 16:26:09936browse
When developing website applications, it is often necessary to manipulate timestamps. The timestamp is an integer representing the number of seconds since 0:00:00 on January 1, 1970. In PHP, we can use the time() function to get the timestamp of the current time. However, sometimes we need to convert the timestamp into a normal time format, using the date() function. Sometimes we also need to convert timestamps into seconds. Some methods will be introduced below.
- Use the intval() function
The intval() function can force the timestamp to an integer to realize the function of converting the timestamp into seconds.
$time = 1499051740; $seconds = intval($time); echo $seconds; // 输出 1499051740
- Using the mod operator
Another way to convert a timestamp to seconds is to use the mod operator. Because 1 second equals 1000 milliseconds, divide the timestamp by 1000 and take the remainder to get the number of seconds.
$time = 1499051740; $seconds = $time % 1000; echo $seconds; // 输出 740
This method can also be used to obtain milliseconds.
- Use date() and strtotime() functions
The date() function can format the timestamp into a normal time format, such as "Y-m-d H:i: s". The strtotime() function can convert a time string into a timestamp. We can convert the timestamp to a time string first, and then convert the time string to seconds.
$time = 1499051740;
$time_str = date("Y-m-d H:i:s", $time);
$seconds = strtotime($time_str);
echo $seconds; // 输出 1499051740
Although this method is more troublesome, it can achieve more complex time conversion, such as converting timestamps to specific time formats, such as "m/d/Y".
Summary
The above is how to convert PHP timestamp to seconds. int_val() and the mod operator are simpler methods suitable for simple time conversions. Using the date() and strtotime() functions can achieve more complex time conversion, which is suitable for situations where a specific time format is required. Developers can choose the appropriate method according to actual needs.
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