include problem

[klepec]

I have a code where i include file (on submit).

 

if isset(...

include "example.php";

 

This example.php contains a variable $message which i later print in original code.

 

How do i prevent getting undefined variable errors? (before submit button is pressed)

 

Thanks

 

[cpd]

Apply an "isset()" to where-ever your using the variable but it could be argued, and I would argue, that's bad execution practice.

 

<?=(isset($message) ? $message : "");?>

[mr.noname]

you can use the default value

for example

$message = "you default value";

include("some_process_file_that_change_behavior_of_message_var.php");

//follow you code check here

 

hope it help

[cpd]

you can use the default value

for example

$message = "you default value";

include("some_process_file_that_change_behavior_of_message_var.php");

//follow you code check here

 

It's another option but then your blinded as to what's happening to $message. Its only a work around not a practical solution in my opinion.

hope it help

[klepec]

...but it could be argued, and I would argue, that's bad execution practice.

 

What do you mean by that?

Can you please suggest a better way of doing this?

 

Thanks for the answers

[cpd]

It means you could ultimately end up testing every single variable just because you want to print it out. What is your specific example and I may be able to suggest an alternative method?

[klepec]

I know :/ ... i do includes whenever i operate with the databases and forms.

For example, there is a user form for storing company information and few company images.

 

In original file i usually do the html (form), and submit button isset condition (PHP).

In included file (PHP only) i operate with post variables, create thumbnails, save images, insert to database, select from database.... etc

 

Then back in original file I usually print out database results, messages etc.

 

 

 

 

[cpd]

If the include file is directly related to the file your executing then just put the code in the same php file as your html file. There's not really any need to create another page for it.

[klepec]

Okay, ill do that. Thanks for all the help )