On Jan 10, 2011, at 9:35 AM, mike dorian wrote:


Questions with regards to compiling PHP to support GD with JPEG on 64-bit CentOS 5.5.

1) Specifying folder for jpeg library
When I execute the following command, am I saying the full path to libdir is at /usr/source/lib64? ./configure --with-apxs2=/usr/local/apache2/bin/apxs --with-gd -- with-jpeg-dir=/usr/source --with-libdir=lib64

Should I have done the following instead?
./configure --with-apxs2=/usr/local/apache2/bin/apxs --with-gd -- with-jpeg-dir=/usr/source/lib64

2) After copying the compiled JPEG libraries to the the lib64 directory, PHP is still unable to call the GD functions (ie ImageCreateFromJpeg) properly.
Once I've done the following.
./configure --enable-shared
make install

I have the following files installed. Meanwhile the /usr/local/ lib64 directory doesn't have these files. Despite copying the whole set to /usr/local/lib64, the above configure command still doesn't work.
/usr/local/lib/libjpeg.so -> libjpeg.so.8.0.2
/usr/local/lib/libjpeg.so.8 -> libjpeg.so.8.0.2

The following displays a blank page on my Firefox.
header('Content-Type: image/jpeg');
  $image_file_path = '/usr/local/apache2/htdocs/image.jpg';
  $im = @ImageCreateFromJpeg($image_file_path)";
  echo "$im";
  echo "End: imagedestroy($im)";


Hi Mike,
Dont know about your server config, but maybe try using this create image script and see.

function create_image()
    //Let's generate a totally random string using md5
    $md5_hash = md5(rand(0,999));
    //We don't need a 32 character long string so we trim it down to 5
    $security_code = substr($md5_hash, 15, 5);

    //Set the session to store the security code
    $_SESSION["security_code"] = $security_code;

    //Set the image width and height
    $width = 100;
    $height = 20;

    //Create the image resource
    $image = ImageCreate($width, $height);

    //We are making three colors, white, black and gray
    $white = ImageColorAllocate($image, 255, 255, 255);
    $black = ImageColorAllocate($image, 0, 0, 0);
    $grey = ImageColorAllocate($image, 204, 204, 204);

    //Make the background black
    ImageFill($image, 0, 0, $black);

    //Add randomly generated string in white to the image
    ImageString($image, 3, 30, 3, $security_code, $white);

//Throw in some lines to make it a little bit harder for any bots to break
    imageline($image, 0, $height/2, $width, $height/2, $grey);
    imageline($image, $width/2, 0, $width/2, $height, $grey);

    //Tell the browser what kind of file is come in
    header("Content-Type: image/jpeg");

    //Output the newly created image in jpeg format

    //Free up resources

Was taken from the WebCheatSheet.com - Create CAPTCHA Protection.
Namely to see how they are using the ImageJpeg, not the whole code.
But, at least you will have a code you know produces an image if anything and
you can shorten the things on the list to check. ;)

Karl DeSaulniers
Design Drumm

PHP Database Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php

Reply via email to