Need some help with GD and PHP.

[suzkaw]

I am trying to upload a pic to a directory and make a thumbnail in of the image in another directory. Then write both names to the database. I have the single image upload working but not the thumbnail.

Here is what I have:

//################# UPLOAD IMAGE TO FOLDER #################

if ($action == "upload")
{
     if ($userfile AND $userfile != "none") {
$handle=opendir($full_path);
while (list($key,$val) = each($accepted_types))

 if(!in_array($userfile_type, $accepted_types))
{
   {$invalidext=true;break;}
}


if ($userfile_size > $maxsize) {echo "ERR: File too large";}

elseif ($invalidext) {echo "ERR: Forbiden file extension";}

else {

$extt = substr($userfile_name, -4, 4);
$spaceless_name = time() . $extt;


$file_and_path = $full_path . $spaceless_name;


$userfile_name = $spaceless_name;


if(move_uploaded_file($userfile, $file_and_path)){

echo "<table width=600 align=center bgcolor=ffffff><tr><td>Your image has been added \"$userfile_name\" .</td></tr></table>";

} else {


echo "File upload failed!";


}
        $strDescription = addslashes(nl2br($txtDescription));

        $query = "INSERT INTO tbl_Files (description,filename, filesize, filetype, owner, prop_num) values ('$strDescription', '$userfile_name', '$userfile_size', '$userfile_type', '$current_user', '$propnum')";
        if (!mysql_query ($query, $link) )
                {
        die (mysql_error());
                }
          echo " uploaded succesfully";
                }

    }


                      } 

Now I have found a neat little resizing function that I would like to place in this so it does the resizing. My question is where do I place it? I can't get it to work for anything.

Also here is the function:

<?php
function createthumb($userfile_name,$filename,$new_w,$new_h){ 
____global $gd2; 
____$system=explode(".",$userfile_name); 
____if (preg_match("/jpg|jpeg/",$system[1])){ 
________$src_img=imagecreatefromjpeg($userfile_name); 
____} 
____if (preg_match("/png/",$system[1])){ 
________$src_img=imagecreatefrompng($userfile_name); 
____} ____
    $old_x=imageSX($src_img); 
____$old_y=imageSY($src_img); 
____if ($old_x > $old_y) { 
________$thumb_w=$new_w; 
________$thumb_h=$old_y*($new_h/$old_x); 
____} 
____if ($old_x < $old_y) { 
________$thumb_w=$old_x*($new_w/$old_y); 
________$thumb_h=$new_h; 
____} 
____if ($old_x == $old_y) { 
________$thumb_w=$new_w; 
________$thumb_h=$new_h; 
____} ___

if ($gd2==""){ 
________$dst_img=ImageCreate($thumb_w,$thumb_h); 
________imagecopyresized($dst_img,$src_img,0,0,0,0,$thumb_w,$thumb_h,$old_x,$old_y); 
____}else{ 
________$dst_img=ImageCreateTrueColor($thumb_w,$thumb_h); 
________imagecopyresampled($dst_img,$src_img,0,0,0,0,$thumb_w,$thumb_h,$old_x,$old_y); 
____} 

____if (preg_match("/png/",$system[1])){ 
________imagepng($dst_img,$filename); 
____} else { 
________imagejpeg($dst_img,$filename); 
____} 
____imagedestroy($dst_img); 
____imagedestroy($src_img); 
} 

?>

[pootergeist]

personally I'd go with using an external script and calling it to page within the src parameter of an <img> tag. This way you never have to worry about sending headers after content.

Where you have echoed out the <table>your image has been uploaded</table> you can add the img tag (if you don't want the image displayed, just do it at height="1" width="1" ). Also sling the database updating scrippy there. eg

echo '<table><tr><td><img src="thumbnail.php?image_ref=' .$file_and_path. '"> cheers</td></tr></table>';
$arg = mysql_query("INSERT INTO `images` (some stuff)");

On a side note: slinging the database bit before the image create call and using the auto-increment id field to name the thumbnail can often help loads for assuring no files are named identically and hence overwritten.

If you are GD1.6ing (or even 2+), you could check the link in my signature for some simple thumbnailing scripts. Note though that DW on Mac has a nasty habit of converting the spaces to underscores as noted in your scriptlet above (you would NEED to remove them)