Re: namespace trouble

[Pascal Desroche <pascal@xxxxxxx>]

thanx a lot Keith ;


Keith Roberts a écrit :
> Hi Pascal. You seem to have a problem with the scope of your 
> variables.
> 
> On Thu, 31 May 2007, Pascal Desroche wrote:
> 
>> To: Andy Stratton <astratton@xxxxxxxxxxxxxxx>
>> From: Pascal Desroche <pascal@xxxxxxx>
>> Subject: Re:   namespace trouble
>>
>> Yes Anddy, i did this to get every kind of info i could. i 
>> just don't understand why this
>>
> 
> <?php
> 
> 
> //here you are declaring $example in the global scope.
> $example = "php variable test";
> 
> 
> PrintExample();
> 
> function PrintExample(){
> 
> // now you are trying to access a global variable
> // inside a function
> echo "$example";
> 
> }
> 
> ?>
> 
>> Notice: Undefined variable example
> 
> to do this you need to use the global keyword inside the 
> function, like this:
> 
> function PrintExample() {
> 
> // tell php you want to access a global variable
> global $example;
> 
> // or global $var1, $var2, ... etc
> 
> echo $example;
> 
> }
> 
> It's not good practice to access global variables like that 
> anyway. When you get onto OOP PHP then that would be 
> frowned upon.
> 
> Usually you would want to pass the global variable as a 
> parameter to the function, like this:
> 
> 
> PrintExample('testing...');
> 
> function PrintExample($example) {
>    echo $example;
> }
> 
> HTH
> 
> Keith
> 
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