A case of PHP time format check function

This article describes a PHP implementation of the time format check of a function to check whether a given time is well-formed. Please refer to the friends who are in need. The following code can be used to verify whether the time that the user entered is compliant. Example: "; $str = "2012-02-30 12:31:22"; echo $str. "-"; echo isdatetime ($STR)? "TRUE": "FALSE"; echo "\ n"; $str = "2012-02-10 12:31:22"; echo $str. "-"; echo isdatetime ($STR)? "TRUE": "FALSE"; echo "\ n"; $str = "2012-02-10"; echo $str. "-"; Echo Isdatetime ($str, "YMD")? "TRUE": "FALSE"; echo "\ n"; $str = "2012-02-10"; echo $str. "-"; Echo Isdatetime ($str, "y-m-d")? "TRUE": "FALSE";? > Output Result: 2012-02-30 12:31:22-false 2012-02-10 12:31:22-true 2012-02-10-false 2012-02-10-true Code Description: Convert the incoming time into a timestamp with strtotime, then use the DATE function to convert to the specified format, if the converted string is the same as the one passed in, the format is correct.

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