Calling function info

[graham23s]

Hi Guys,

 

Just getting started using functions more and more now, but i'm having trouble here is the code:

 

function:

 

     ############################################# 
     # Thumbnail code                            
     #############################################   
     function resize_images($filename,$uploaddirectory,$var_loggedinuser) {  
     
        ## Find out the files extension 
        $ext = explode(".", $filename); 
        $ext = $ext[count($ext)-1]; 
          
        ## random numbers 
        $randomnumber = rand(0,999999999); 
          
          if($ext == "jpg" || $ext == "jpeg")     
           
              $image = imagecreatefromjpeg($uploaddirectory); 
               
          elseif($ext == "png") 
           
              $image = imagecreatefrompng($uploaddirectory); 
               
          elseif($ext == "gif") 
           
              $image = imagecreatefromgif($uploaddirectory); 
               
        ## save the file in %     
        $size = 0.50; 
         
        ## rename the thumbnail 
        $newimagename_thumb = $var_loggedinuser. "-" .time(); 
        $save = "thumbs/$newimagename_thumb.$ext"; 
               
        ## get the files dimensions 
        list($width,$height) = getimagesize($uploaddirectory); 
         
        $modwidth = $width * $size;  
        $modheight = $height * $size;  
        $thumbnail = imagecreatetruecolor($modwidth, $modheight) ;  
        imagecopyresampled($thumbnail, $image, 0, 0, 0, 0, $modwidth, $modheight, $width, $height);         
        ## imagejpeg($thumbnail, $save, 100);  
         
        if($ext == 'jpg' || $ext == 'jpeg') 
      
        imagejpeg($thumbnail, $save, 100); 
      
        if($ext == 'gif') 
      
        imagegif($thumbnail, $save, 100); 
      
        if($ext == 'png') 
      
        imagepng($thumbnail, $save, 100); 
        
        return($save);
        
        }

 

calling the function:

 

resize_images($filename,$uploaddirectory,$var_loggedinuser);

 

what im having trouble with is, how do i get information FROM the function i need:

 

$newimagename_thumb.$ext

 

this bit of information back from the function to use when displaying the thumbnail not sure how to acomplish this any help would be great guys

 

Cheers

 

Graham

[cooldude832]

a function can be used in any way you want, the return is optional, however seeing as you want it you can say

$var = doafunction();

 

and then $var will contain the return of the doafunction();

 

You could echo it straight out

 

echo doafunction();

 

and it out put it make sense?