What are the differences between require and include,
include_once?
- 3 Answers
- 14565 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / sri harsha
include();--> include the file, but in case of file missing
throws a warning and continues execution of code of next line.
require();--> require also includes the file but in case of
file missing throws an fatal error and stop the execution of
the code of next line.
include_once();-->if same file was included first it will
not include the file another time.
| Is This Answer Correct ? | 46 Yes | 1 No |
Answer / tina
require - including a file/page ,if file doesn't exist,then
it gives error and doesn't execute.
include-including a file/page,if file doesn't exit,then it
gives warning and begin to execute.
include_once-including file/page, if it didn't been already
included,it includes else it won't.
| Is This Answer Correct ? | 41 Yes | 3 No |
Answer / ashwini
All three include(),include_once() and require() are used to
an include file into the current page.
If the file is not present, require(), calls a fatal error,
while in include() does not.
The include_once() statement includes and evaluates the
specified file during the execution of the script. This is a
behavior similar to the include() statement, with the only
difference being that if the code from a file has already
been included, it will not be included again. It does not
call a fatal error if file not exists. require_once() does
the same as include_once(), but it calls a fatal error if
file not exists.
| Is This Answer Correct ? | 5 Yes | 1 No |
Define object-oriented methodology?
class Database { public static $_instance; public static function getInstance() { if(!isset(self::$_instance)) self::$_instance = new Database(DB_SERVER, DB_USER, DB_PASS, DB_NAME); print_r(self::$_instance); return self::$_instance; } } can any one explain "self::$_instance = new Database(DB_SERVER, DB_USER, DB_PASS, DB_NAME);" this line
Tell me how a constant is defined in a php script?
Explain me what is the use of header() function in php?
How to get complete current page url in php?
hi here one small project given to me in an software company during interview. one page that would count down till 9pm (today means every day before 9pm it would count down to zero) this means there will show how many mins. sec. and hours are left till 9pm so it would be like 1 hr 20 mins 23 sec. then it up count down every sec and then show 1hr 20mins 22sec left till 9pm once the count down reaches zero it would show a flesh player video will autostart. the flash player will be from http://www.longtailvideo.com/players/jw-flv-player/ (the player is embed into the page.) that same page will track to see if they have already seen the video using php sessions then if they go back to that page it would redirect them to a new page saying that they have already wathed the video.
What is the purpose of the following files having extensions 1) .frm 2) .myd 3) .myi? What do these files contain?
hi sir am a fresher just learning LAMP COURSE linux,apache,mysql and php .just i finished my M.C.A 2009 passed out ..can any one tell after i finish this course how much salary we expect in any php based company ? and also tell please how much salary we can demand as a fresher with my M.C.A qualification as a PHP fresher in a company ? how much we get atleast mininum as a PHP fresher in CHENNAI and Bangalore just send ur valuable suggestions to kiranpulsar2007@gmail.com please guide to me sir
Does session expire on closing browser?
i want to store retrieved data from database into an array list with limit.And display the data from that array list.have any answer for this?
How could I install codeignitor ?
What are the rules for naming a php variable?
PHP 
