Just tried it with the following but still fails. All I'm getting
is a blank page.
<php?
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, $white);
//Throw in some lines to make it a little bit harder for any
bots to break
ImageRectangle($image,0,0,$width-1,$height-1,$grey);
imageline($image, 0, $height/2, $width, $height/2, $grey);
imageline($image, $width/2, 0, $width/2, $height, $grey);
//Tell the browser what kind of file is come in
header("Content-Type: image/jpeg");
//Output the newly created image in jpeg format
ImageJpeg($image);
//Free up resources
ImageDestroy($image);
}
create_image();
?>
From: karl@xxxxxxxxxxxxxxx
Date: Mon, 10 Jan 2011 17:10:35 -0600
To: php-db@xxxxxxxxxxxxx
Subject: Re: Configuring PHP with GD and JPEG support
On Jan 10, 2011, at 9:35 AM, mike dorian wrote:
Hello,
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
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.a
/usr/local/lib/libjpeg.la
/usr/local/lib/libjpeg.so -> libjpeg.so.8.0.2
/usr/local/lib/libjpeg.so.8 -> libjpeg.so.8.0.2
/usr/local/lib/libjpeg.so.8.0.2
The following displays a blank page on my Firefox.
<?php
header('Content-Type: image/jpeg');
$image_file_path = '/usr/local/apache2/htdocs/image.jpg';
$image_file_path";
$im = @ImageCreateFromJpeg($image_file_path)";
echo "$im";
imagejpeg($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, $white);
//Throw in some lines to make it a little bit harder for any
bots to break
ImageRectangle($image,0,0,$width-1,$height-1,$grey);
imageline($image, 0, $height/2, $width, $height/2, $grey);
imageline($image, $width/2, 0, $width/2, $height, $grey);
//Tell the browser what kind of file is come in
header("Content-Type: image/jpeg");
//Output the newly created image in jpeg format
ImageJpeg($image);
//Free up resources
ImageDestroy($image);
}
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. ;)
HTH,
Karl DeSaulniers
Design Drumm
http://designdrumm.com
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