PHP and MySQL syntax: Difference between revisions
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the current timestamp ex: 1292897201 | the current timestamp ex: 1292897201 | ||
* php: echo time(); | * php: echo time(); | ||
* mysql: SELECT NOW()+0; | * mysql: SELECT NOW()+0; //2011-04-01 12:19:43 returns 20110401122023.000000 | ||
* javascript: [http://stackoverflow.com/questions/221294/how-do-you-get-a-timestamp-in-javascript datetime - How do you get a timestamp in JavaScript? - Stack Overflow] {{access | date = 20110323}} | * javascript: [http://stackoverflow.com/questions/221294/how-do-you-get-a-timestamp-in-javascript datetime - How do you get a timestamp in JavaScript? - Stack Overflow] {{access | date = 20110323}} | ||
Revision as of 12:21, 1 April 2011
Convert time stamp <--> the human readable time format
now
the human readable time format ex: 2010-12-21 10:05:06
- php: echo date("y-m-d H:i:s", time() ); //Convert the time stamp of current time to the human readable time format. Ex: return '2010-12-21 10:05:06'
- mysql: SELECT NOW(); /*the human readable current time */
the current timestamp ex: 1292897201
- php: echo time();
- mysql: SELECT NOW()+0; //2011-04-01 12:19:43 returns 20110401122023.000000
- javascript: datetime - How do you get a timestamp in JavaScript? - Stack Overflow [Last visited: 20110323]
specified time
the human readable time format ex: 2010-12-21 10:05:06
- php: echo date("y-m-d H:i:s", 1292897201 ); // convert the time stamp 1292897201 to the human readable time format
convert human-readable time to timestamp
- php:
- mysql: select UNIX_TIMESTAMP('2011-03-15 18:53:57'); /* return timestamp: 1300186437 */
time difference of two time values
- php: using mktime() function
- mysql: SELECT TIMEDIFF('2010:01:01 00:00:00', '2010:02:01 00:00:00'); /* return -744:00:00 */