Date function

 The format of the outputted date string.date_default_timezone_set — Sets the default timezone used by all date/time functions in a script.We use this because some time its necessary to store date when some user event occur and we need to store this to particular database and many more

1:  // set the default timezone to use. Available since PHP 5.1  
2:    date_default_timezone_set('UTC');  
3:    
4:  //Set date function according to: IST(Indian Standard Time )  
5:  date_default_timezone_set('Asia/Kolkata');  
6:  $today=date("Ymd"); //date function is used here  
7:    
8:  echo $today; //will prints date in string like structure  
9:         //ex.-20121227 for 27th Dec.2012  

Ex.

 <?php  
 $timezone=date_default_timezone_get();  
 echo $timezone."<br>";  
 print strftime('%c')."<br>";  
 $timezone1=date_default_timezone_set('Asia/Calcutta');  
 echo $timezone1."<br>";  
 print strftime('%c');  
 ?>  

Output

 America/New_York  
 Fri Dec 28 00:25:54 2012  
 1  
 Fri Dec 28 10:55:54 2012  

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