require, require_once, include: which and why?


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Syntax: [ Download ] [ Hide ]Syntax: [ Download ] [ Show ][Mon Mar 31 11:07:25 2014] [error] [client 180.76.5.27] PHP Notice:  Constant DBHOST already defined in /var/www/vhosts/site.co.uk/httpdocs/dbconn.php on line 9
[Mon Mar 31 11:07:25 2014] [error] [client 180.76.5.27] PHP Notice:  Constant DBUSER already defined in /var/www/vhosts/site.co.uk/httpdocs/dbconn.php on line 10
[Mon Mar 31 11:07:25 2014] [error] [client 180.76.5.27] PHP Notice:  Constant DBPASS already defined in /var/www/vhosts/site.co.uk/httpdocs/dbconn.php on line 11
[Mon Mar 31 11:07:25 2014] [error] &

Related to : require, require_once, include: which and why?
Using require_once then require
Databases
I have two files A & B.
All the files are linked. In file A, I have require_once(filename.php). In file B i have require(filename.php). For some reason this causes some conflict when running the code. There is code in File A that usually runs, but doesnt when the above is the case. Any idea why? Thanks.
auto prepend file versus require() or require_once()
Databases
I'm using require_once() method, and I need to load a lot of files, but depending by case, I load certain php file, not all at once. I'm trying to speed up my application, and I'm wondering if I can put all of them into php.ini file as auto prepend files.
Question : Does auto prepend file do the same as requre() does?I'm speaking about performances. Precisely, if I put
auto prepend file /Files/file1.php
auto prepend file /Files/file2.php
auto prepend file /Files/file3.php
auto prepend file /Files/file4.php
is it same as (time to get those files, or auto prepend files add them on start of webserver)
require /Files/file1.php
require /Files/f
require, require_once, include: which and why?
Databases
Syntax: [ Download ] [ Hide ]Syntax: [ Download ] [ Show ][Mon Mar 31 11:07:25 2014] [error] [client 180.76.5.27] PHP Notice:  Constant DBHOST already defined in /var/www/vhosts/site.co.uk/httpdocs/dbconn.php on line 9
[Mon Mar 31 11:07:25 2014] [error] [client 180.76.5.27] PHP Notice:  Constant DBUSER already defined in /var/www/vhosts/site.co.uk/httpdocs/dbconn.php on line 10
[Mon Mar 31 11:07:25 2014] [error] [client 180.76.5.27] PHP Notice:  Constant DBPASS already defined in /var/www/vhosts/site.co.uk/httpdocs/dbconn.php on line 11
[Mon Mar 31 11:07:25 2014] [error] &
Difference between require_once(), require(), include() !
Databases

Difference between require() and require_once(): require() includes and evaluates a specific file, while require_once() does that only if it has not been included before (on the same page). So, require_once() is recommended to use when you want to include a file where you have a lot of functions for example. This way you make sure you don't include the file more times and you will not get the "function re-declared" error. Difference between require() and include() is that require() produces a FATAL ERROR if the file you want to include is not found, while include() only produces a WARNING. There is also include_once() which is the same as include(), but the difference between them is the

Fatal error!: require_once() [function.require]:?
Databases

what kind of error is this? my page was just running fine. i did not change anything neither the location of the requested file.

Warning: require_once(../php/main.php) [function.require-once]: failed to open stream: No such file or directory in.................... line 7

Fatal error: require_once() [function.require]: Failed opening required '../php/main.php' (include_path='.;C:php5pear') in..........................line 7.


the differences between require and require_once in php
Databases

the difference between require and require_once,i just want to know the difference rather
than Warning and Fatal Error in php.



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