Hey All,

Im still relatively new to php and am trying to learn it at a solid pace, but I have been working with this existing script that automatically creates thumb nails of pictures in the same folder the script is in.

When the script generates the thumbnail image, it uses the existing name but adds a tn_ in front of the original name.
So for example
Original File:
"picturename.jpg"
Thumbnail created file
"tn_picturename.jpg"

My problem is, I want to get the extension of the thumbnail on the end of the original file name for example
"picturename_tn.jpg" <---- (the _tn is on at the end)

I have tried everything and cannot figure this out.
Its a pretty simple script as well.

Here is the script. I would really appreciate if someone could help me out on this small problem of mine.

PHP Code:

<?php 
$imagefolder='.';
$thumbsfolder='.';
$pics=directory($imagefolder,"jpg,JPG,JPEG,jpeg,png,PNG");
$pics=ditchtn($pics,"tn_");
if ($pics[0]!="")
{
    foreach ($pics as $p)
    {
        createthumb($p,"tn_".$p,100,100);
    }
}

/*
    Function ditchtn($arr,$thumbname)
    filters out thumbnails
*/
function ditchtn($arr,$thumbname)
{
    foreach ($arr as $item)
    {
        if (!preg_match("/^".$thumbname."/",$item)){$tmparr[]=$item;}
    }
    return $tmparr;
}

/*
    Function createthumb($name,$filename,$new_w,$new_h)
    creates a resized image
    variables:
    $name        Original filename
    $filename    Filename of the resized image
    $new_w        width of resized image
    $new_h        height of resized image
*/    
function createthumb($name,$filename,$new_w,$new_h)
{
    $system=explode(".",$name);
    if (preg_match("/jpg|jpeg/",$system[1])){$src_img=imagecreatefromjpeg($name);}
    if (preg_match("/png/",$system[1])){$src_img=imagecreatefrompng($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;
    }
    $dst_img=ImageCreateTrueColor($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); 
}

/*
        Function directory($directory,$filters)
        reads the content of $directory, takes the files that apply to $filter 
        and returns an array of the filenames.
        You can specify which files to read, for example
        $files = directory(".","jpg,gif");
                gets all jpg and gif files in this directory.
        $files = directory(".","all");
                gets all files.
*/
function directory($dir,$filters)
{
    $handle=opendir($dir);
    $files=array();
    if ($filters == "all"){while(($file = readdir($handle))!==false){$files[] = $file;}}
    if ($filters != "all")
    {
        $filters=explode(",",$filters);
        while (($file = readdir($handle))!==false)
        {
            for ($f=0;$f<sizeof($filters);$f++):
                $system=explode(".",$file);
                if ($system[1] == $filters[$f]){$files[] = $file;}
            endfor;
        }
    }
    closedir($handle);
    return $files;
}
?>

On the 10th line in your code above, change this line

PHP Code:

createthumb($p,"tn_".$p,100,100); 


into this

PHP Code:

createthumb($p,$p."_tn",100,100); 


Lizciz, Thanks for the response.

I have actually already tried that, and it put the _tn at the end of the .jpg.

For example
imagename.jpg_tn

My friend mentioned this
"create separate variables for the filename and the extension and then you will be able to place _tn at the end of the filename"

How would i go about doing that.
I see his point and that is probably the problem right?

Aha, sorry.
Then replace that one line with these

PHP Code:

$tmp = explode('.', $p);
$thumb = $tmp[0] . '_tn.' . $tmp[1];
createthumb($p,$thumb,100,100); 


Actually, don't do that, cause it won't work :P
You have to edit the regexp that seperates the original images from thumbnails, in the ditchtn() function. Try this:

On the fourth line, change to these two lines

PHP Code:

$thumbExt = "_tn";
$pics=ditchtn($pics,$thumbExt); 


Change the ditchtn() function to this (I only edited the preg_match() expression)

PHP Code:

function ditchtn($arr,$thumbname)
{
    foreach ($arr as $item)
    {
        if (!preg_match("/^[a-zA-Z0-9]+".$thumbname."\.[a-zA-Z]{3,4}/",$item)){$tmparr[]=$item;}
    }
    return $tmparr;
} 


And the three lines in my previous post, change them into this

PHP Code:

$tmp = explode('.', $p);
$thumb = $tmp[0] . $thumbExt . '.' . $tmp[1];
createthumb($p,$thumb,100,100); 


That should do it.