Edit pre-built in functions

[EchoFool]

Hey,

 

If i make a function named "function mysql_error()" Will php allow me ?

 

Because mysql_error is already set up as default will it not allow me to use it or will it use my function over the pre-default one ?

 

OR can i just find a way to edit mysql_error() as that would save me editing alot of scripts.

[Gighalen]

I'm not exactly sure how functions will behave if you create one that already exists, but I can tell you that you can create functions in older PHP versions that are used by newer PHP functions to achieve the same result. In example, the realpath_cache_size() function was added in PHP 5 but you can create a function in PHP 4 with that name to create a function that does the same that it would do in PHP 5 - or does something completely different. Hope this helps.

[litebearer]

The easy to find out is...

use the existing function name but have it do something really simple like, oh gee, "Hello World".

 

The test should give you your answer

[oni-kun]

Hey,

 

If i make a function named "function mysql_error()" Will php allow me ?

 

Because mysql_error is already set up as default will it not allow me to use it or will it use my function over the pre-default one ?

 

OR can i just find a way to edit mysql_error() as that would save me editing alot of scripts.

 

APC, or source, but it is highly discouraged. Why on earth would you do this. It's the antichrist of portability.

[EchoFool]

Because my alternative is to go through thousands of lines of codes and hundreads of scripts and replace mysql_error to my own custom function and that is going to take weeks.

[oni-kun]

Because my alternative is to go through thousands of lines of codes and hundreads of scripts and replace mysql_error to my own custom function and that is going to take weeks.

 

I still fail to see a real scenario in which this would be needed.

[trq]

Because my alternative is to go through thousands of lines of codes and hundreads of scripts and replace mysql_error to my own custom function and that is going to take weeks.

 

Have yo not heard of search and replace?

[oni-kun]

Because my alternative is to go through thousands of lines of codes and hundreads of scripts and replace mysql_error to my own custom function and that is going to take weeks.

 

Have yo not heard of search and replace?

 

I was going to mention grep/sed, but I thought I'd get lashed.

[EchoFool]

Because my alternative is to go through thousands of lines of codes and hundreads of scripts and replace mysql_error to my own custom function and that is going to take weeks.

 

 

Have yo not heard of search and replace?

 

With a script :S ?

[trq]

Or with your ide if your using a decent one.

 

On Linux the command could be as simple as something like (not tested)....

 

find /path/to/php/files -name '*.php' -exec sed -i -e 's/mysql_error/custom_error_function/g' {} \;

[EchoFool]

Did not know i could make a script to edit words thatll be handy! Ill read up on it. Thanks.