How to easily convert Chinese time to timestamp using PHP function

In PHP, we often need to process some information about time, such as converting human-readable time into a computer-usable timestamp. One of the more common needs is to convert Chinese time to timestamp, which can be easily handled using some PHP functions.

1. Use the strtotime function
In PHP, we can use the strtotime function to convert Chinese time into a timestamp. The syntax of this function is as follows:

strtotime ( string $time [, int $now = time() ] ) : int

Among them, string $time represents the time to be converted, int $now Indicates an optional parameter, indicating the timestamp of the current time. The default is the current time. This function returns an integer value representing the converted timestamp. Here is an example:

$chinese_time = "May 5, 2021"; // Chinese time
$timestamp = strtotime($chinese_time); // Change Chinese Convert time to timestamp
echo $timestamp; //Output timestamp
?>

When using this function, you need to pay attention to the following points:

1. Time The format must be "year-month-day" or "year-month-day", and do not include "hour", "minute", "second" and other information;
2. If the time format is incorrect, the function will return false;
3. If the Chinese time to be converted contains Chinese characters, you need to use the urlencode function to transcode the Chinese characters.

2. Use the DateTime class
After PHP5.2 version, we can use the DateTime class to handle date and time related operations. This class provides a createFromFormat method, which can convert a time string in a specified time format into a DateTime object, and then use the getTimestamp method to obtain the timestamp. Here is an example:

$chinese_time = "May 5, 2021"; // Chinese time
$date = DateTime::createFromFormat('Y year m month d日', $chinese_time); // Convert Chinese time to DateTime object
$timestamp = $date->getTimestamp(); // Get timestamp
echo $timestamp; // Output timestamp
?>

When using this class, you need to pay attention to the following points:

1. The time format must be "year-month-day" or "year-month-day";
2. If the time format is incorrect, the code will throw an exception;
3. If the Chinese time to be converted contains Chinese characters, you need to use the urlencode function to transcode the Chinese characters.

Summary
PHP Chinese time conversion to timestamp is a common requirement, which can be processed using the strtotime function or DateTime class. No matter which method is used, attention needs to be paid to the correctness of the time format and the transcoding of Chinese characters. Hope this article is helpful to you.

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