[RESOLVED] OOP with Exception

[sophistikat]

I am building a admin/cms site and would like to carry all my error messages in one class like this:

class ExceptionError
{
    private $FMANAGER_ZERO_PARAMETERS = "ERROR: FileManager.fInclude, a parameter must be defined";

public function rZeroParameters() {
    return $this->FMANAGER_ZERO_PARAMETERS;
}
}

In another object, i want to throw an error when an important parameter is required, like so

include("ExceptionError.inc");
$EError = new ExceptionError();

class FileManager
{
    public function fileInclude($file_path="") {
        if ($file_path=="") {
            throw new Exception($EError->showZeroParameters());    

        }
    }
}

If I replace

$EError->showZeroParameters()

with a string literal

"Display Error"

it works.

I have played with my ExceptionError object by using keywords return and echo but both results are the same, nothing. I got no error message. I also tried simply accessing the variable from ExceptionError directly (making my $FMANAGER_.... variable public of course) but still nothing.

Am I now to believe the Exception method only accepts string literals? I can't find a document to say otherwise.

[sophistikat]

i found the solution, making my error object a static class and properly calling static variables from another class did the trick, ie: found the docs I was looking for. here's the solution:

this keeps all my error messages in one place and throws the exception i want, here's the hierarchy of my objects.

ExceptionError

class ExceptionError
{
    public static $FMANAGER_ZERO_PARAMETERS = "ERROR: FileManager.fileInclude, a parameter must be defined";

public static $CLASS_INCLUDE_ExceptionError = "FATAL ERROR: ExceptionError [object] cannot be found";
public static $CLASS_INCLUDE_FileManager = "FATAL ERROR: FileManager [object] cannot be found";
public static $CLASS_INCLUDE_Empty = "FATAL ERROR: Unknown [object] cannot be found";
}

FileManager

include("ExceptionError.inc");
if (!class_exists('ExceptionError')) {
    echo ExceptionError::$CLASS_INCLUDE_ExceptionError;
    exit();
}

class FileManager
{
    public function fileInclude($file_path="") {
        if ($file_path=="") {
            throw new Exception(ExceptionError::$FMANAGER_ZERO_PARAMETERS);    

        }
    }
}

index.php

$fm = new FileManager();
    try {
        $fm->fileInclude();
    } catch (Exception $e) {
        echo "Caught an exception error: ", $e->getMessage(), "\n";
    }

the above results in echoing "Caught exception error: ERROR: FileManager.fileInclude, a parameter must be defined " because inside index.php, i did not give fileInclude a parameter.

Hope this helps someone out there.

Happy Coding.