How to use the strtotime function in PHP
There is a function called strtotime in PHP. strtotime implementation function: get the timestamp of a certain date, or get the timestamp of a certain time. strtotime parses the date and time description of any English text into a Unix timestamp [convert system time into a unix timestamp] First, get the unix timestamp of the specified date - strtotime("2009-1-22") Examples are as follows:
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- 1.echo strtotime("2009-1-22")
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- Result: 1232553600
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- Description: Return the timestamp of 0:00:00 on January 22, 2009
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- Second, get the English text date and time
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- The example is as follows:
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- For comparison, use date to convert the current timestamp and the specified timestamp into system time
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- (1) Print the timestamp at this time tomorrow strtotime("+1 day")
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- Current time:
- 1.echo date("Y-m-d H:i:s",time())
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- Result: 2009-01-22 09:40:25
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- Specified time:
- 1.echo date("Y-m-d H:i :s",strtotime("+1 day"))
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- Result: 2009-01-23 09:40:25
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- (2) Print the timestamp of yesterday at this time strtotime("-1 day")
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- Current time:
- 1.echo date("Y-m-d H:i:s",time())
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- Result: 2009-01-22 09:40:25
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- Specified time:
- 1.echo date( "Y-m-d H:i:s",strtotime("-1 day"))
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- Result: 2009-01-21 09:40:25
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- (3) Print the timestamp at this time next week strtotime( "+1 week")
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- Current time:
- 1.echo date("Y-m-d H:i:s",time())
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- Result: 2009-01-22 09:40:25
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- Specified time ：
- 1.echo date("Y-m-d H:i:s",strtotime("+1 week"))
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- Result: 2009-01-29 09:40:25
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- (4) Print last week The timestamp at this time strtotime("-1 week")
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- Current time:
- 1.echo date("Y-m-d H:i:s",time())
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- Result: 2009-01-22 09: 40:25
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- Specified time:
- 1.echo date("Y-m-d H:i:s",strtotime("-1 week"))
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- Result: 2009-01-15 09:40:25
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- (5) Print the timestamp of the specified day of the week strtotime("next Thursday")
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- Current time:
- 1.echo date("Y-m-d H:i:s",time())
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- Result: 2009- 01-22 09:40:25
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- Specified time:
- 1.echo date("Y-m-d H:i:s",strtotime("next Thursday"))
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- Result: 2009-01-29 00:00 :00
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- (6) Print the timestamp of the specified day of the week strtotime("last Thursday")
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- Current time:
- 1.echo date("Y-m-d H:i:s",time())
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- Result: 2009-01-22 09:40:25
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- Specified time:
- 1.echo date("Y-m-d H:i:s",strtotime("last Thursday"))
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- Result: 2009-01- 15 00:00:00
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- As can be seen from the above example, strtotime can parse the date and time description of any English text into a Unix timestamp. We combine mktime() or date() to format the date and time to obtain the specified timestamp to achieve what is needed. date and time.
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- I hope that after the introduction of this article, you can master the usage of strtotime function.
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