Image resize and save issue

[blui]

Hi all, I am new to this php coding and am trying to create a basic CMS, that will allow a user to unload an image of any size, this will then be resized and saved using a specific name eg image1, image 2 etc

 

I have managed to find this code and got it working after installing the gd2 extension, but this code will only save the image as the save file name that was uploaded - see below

 

Can anyone help me, I have spent hours trying out different therories but had no luck,

Thanks in advance for your help, blu

 

<?

$idir = "images/";  // Path To Images Directory

$tdir = "images/thumbs/";  // Path To Thumbnails Directory

$twidth = "125";  // Maximum Width For Thumbnail Images

$theight = "100";  // Maximum Height For Thumbnail Images

 

if (!isset($_GET['subpage'])) {  // Image Upload Form Below  ?>

<form method="post" action="addphoto.php?subpage=upload" enctype="multipart/form-data">

  File:<br />

<input type="file" name="imagefile" class="form">

<br />

<br />

<input name="submit" type="submit" value="Sumbit" class="form">  <input type="reset" value="Clear" class="form">

</form>

<? } else  if (isset($_GET['subpage']) && $_GET['subpage'] == 'upload') {  // Uploading/Resizing Script

$url = $_FILES['imagefile']['name'];  // Set $url To Equal The Filename For Later Use

if ($_FILES['imagefile']['type'] == "image/jpg" || $_FILES['imagefile']['type'] == "image/jpeg" || $_FILES['imagefile']['type'] == "image/pjpeg") {

  $file_ext = strrchr($_FILES['imagefile']['name'], '.');  // Get The File Extention In The Format Of , For Instance, .jpg, .gif or .php

  $copy = copy($_FILES['imagefile']['tmp_name'], "$idir" . $_FILES['imagefile']['name']);  // Move Image From Temporary Location To Permanent Location

  if ($copy) {  // If The Script Was Able To Copy The Image To It's Permanent Location

    print 'Image uploaded successfully.<br />';  // Was Able To Successfully Upload Image

    $simg = imagecreatefromjpeg("$idir" . $url);  // Make A New Temporary Image To Create The Thumbanil From

    $currwidth = imagesx($simg);  // Current Image Width

    $currheight = imagesy($simg);  // Current Image Height

    if ($currheight > $currwidth) {  // If Height Is Greater Than Width

        $zoom = $twidth / $currheight;  // Length Ratio For Width

        $newheight = $theight;  // Height Is Equal To Max Height

        $newwidth = $currwidth * $zoom;  // Creates The New Width

    } else {    // Otherwise, Assume Width Is Greater Than Height (Will Produce Same Result If Width Is Equal To Height)

      $zoom = $twidth / $currwidth;  // Length Ratio For Height

      $newwidth = $twidth;  // Width Is Equal To Max Width

      $newheight = $currheight * $zoom;  // Creates The New Height

    }

    $dimg = imagecreate($newwidth, $newheight);  // Make New Image For Thumbnail

    imagetruecolortopalette($simg, false, 256);  // Create New Color Pallete

    $palsize = ImageColorsTotal($simg);

    for ($i = 0; $i < $palsize; $i++) {  // Counting Colors In The Image

      $colors = ImageColorsForIndex($simg, $i);  // Number Of Colors Used

      ImageColorAllocate($dimg, $colors['red'], $colors['green'], $colors['blue']);  // Tell The Server What Colors This Image Will Use

    }

    imagecopyresized($dimg, $simg, 0, 0, 0, 0, $newwidth, $newheight, $currwidth, $currheight);  // Copy Resized Image To The New Image (So We Can Save It)

    imagejpeg($dimg, "$tdir" . $url);  // Saving The Image

    imagedestroy($simg);  // Destroying The Temporary Image

    imagedestroy($dimg);  // Destroying The Other Temporary Image

    print 'Image thumbnail created successfully.';  // Resize successful

  } else {

    print '<font color="#FF0000">ERROR: Unable to upload image.</font>';  // Error Message If Upload Failed

  }

} else {

  print '<font color="#FF0000">ERROR: Wrong filetype (has to be a .jpg or .jpeg. Yours is ';  // Error Message If Filetype Is Wrong

  print $file_ext;  // Show The Invalid File's Extention

  print '.</font>';

}

}

 

?>