Image Resize Problem (GD)

[faheem786]

Hi there,

I would like to create thumbnails for all the images in a temp folder.

I wrote the following function based on the help provided from this forum.

From the main file called Image_Resize.php I call this resize function by
reading each and every file in the folder.

This works great under win 2k. But causes some problems in win NT

When the function is called from Image_Resize.php the error says that

"Notice: Undefined index: extension in E:\MySite\Include\CommonFunctions.php on line 328"

And I'm seeing all the binary funny characters of the image on the screen. Pls help me to solve this

Thanks

Ahmad

FileName: Functions.php

<?php
function imageCreateThumb($src,$dest,$maxWidth,$maxHeight,$quality=100) {

if (file_exists($src)  && isset($dest)) {
    // path info
    $destInfo     = pathInfo($dest);
    $imageDetails = getimagesize($src);

    $imageSizeX = $imageDetails[0];
    $imageSizeY = $imageDetails[1];
    $imageType  = $imageDetails[2];

    $thumbSizeX = $maxWidth;
    $thumbSizeY = $maxHeight;

    // The two lines beginning with (int) are the super important magic formula part.
    (int)$thumbX = ($imageSizeX <= $imageSizeY) ? round(($imageSizeX * $thumbSizeY)/$imageSizeY) : $thumbSizeX;
    (int)$thumbY = ($imageSizeX >  $imageSizeY) ? round(($imageSizeY * $thumbSizeX)/$imageSizeX) : $thumbSizeY;

    // path rectification
    if ($destInfo['extension'] == "gif") {
        $dest = substr_replace($dest, 'jpg', -3);
    }

    // true color image, with anti-aliasing
    $destImage = imageCreateTrueColor($thumbX, $thumbY) or die ("Cannot Initialize new GD image stream");
    imageAntiAlias($destImage,true);

    // src image
    switch ($imageType) {
        case 1: //GIF
        $srcImage = imageCreateFromGif($src);
        break;

        case 2: //JPEG
        $srcImage = imageCreateFromJpeg($src);
        break;

        case 3: //PNG
        $srcImage = imageCreateFromPng($src);
        break;

        default:
        return false;
        break;
    }

    // resampling
    imageCopyResampled($destImage, $srcImage, 0, 0, 0, 0, $thumbX, $thumbY, $imageSizeX, $imageSizeY);

    // generating image
    switch ($imageType) {
        case 1:
        case 2:
        imageJpeg($destImage, $dest, $quality);
        break;

        case 3:
        imagePng($destImage, $dest);
        break;
    }
    return true;
}
else {
    return false;
}

}

=============================================================================
FileName: ImageResize.php
<?

$TempFolder = realpath("ProductImages/Temp/");
$FileNamesArray = WriteFolderFilesToArray($TempFolder);

if ($FileNamesArray != "" ){
foreach ($FileNamesArray as $key => $FileName) {

 //************** THUMB IMAGE CREATION *********************
 $DestFolder = "ProductImages/Thumb";
 $SourceFile = realpath($TempFolder  . "/" . $FileName);
 $DestFile   = realpath($DestFolder  . "/" . $FileName);
 $maxWidth   = 100;
 $maxHeight  = 80;

 imageCreateThumb($SourceFile, $DestFile, $maxWidth, $maxHeight);
 unlink($TempFolder . "/" . $FileName);

}
}

?>

[Weedpacket]

Might be more likely to be the version of PHP.

But the test where I presume the error is happening ( if ($destInfo['extension'] == "gif") ) could be replaced by if(stristr($dest,'.')=='.gif').

Or use print_r($destInfo) and see if the extension is being listed under a different name.

[faheem786]

Hi Weedpacket,

Thanks for your help

Now the error

Notice: Undefined index: extension has gone

But still the image machine characters fill the whole browser page. There is something happening without error. But it's not resized.

I see nothing but only the funny machine characters in the whole page

Pls suggest

Thanks
Ahmad

note: there was none of this problem under win 2k and I use latest PHP version installed using - php-4.3.4-installer.exe

[Weedpacket]

Well, I notice you're missing the Content-Type header; without that the browser's got no way of knowing that the data is supposed to be an image.
See the example on the [man]image[/man] manual page to see what I mean.