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Posted by Erwin Moller on 10/06/06 09:52
Steve wrote:
> i prototype on my windows pc. i'm trying to rollout a demo version on a rh
> linux box. both use apache and php 5. i'm having problems with generating
> graphics on the linux side. in particular, the login page creates a
> graphic that has a security code that the user types in and submits with
> their un/passwd. on the linux box, eventually the image request just times
> out in the browser leaving the familiar
> X-in-a-square-where-an-image-should-be. i'm pulling the gd2 dll into php
> cgi on windows and linux appears to have it configured in as well. both
> show the following in phpinfo(). any light someone could shed on this
> would be a tremendous help...tia!
>
> php info for gd (same for windows and linux):
>
> GD Support => enabled
> GD Version => bundled (2.0.28 compatible)
> FreeType Support => enabled
> FreeType Linkage => with freetype
> FreeType Version => 2.1.9
> GIF Read Support => enabled
> GIF Create Support => enabled
> JPG Support => enabled
> PNG Support => enabled
> WBMP Support => enabled
> XBM Support => enabled
>
>
> here's the pertinent login html:
>
> <img src="http://dev.example.com/get.security.image.php">
>
> and here's the intermediate php script (get.security.image.php):
>
> <?
> require_once 'relative.path.php';
> require_once $relativePath . 'site.cfg.php';
> require_once $site->classDirectory . 'security.image.class.php';
> $image = new securityImage($site->securityCode, $site->imagesDirectory .
> 'security.image.jpg');
> $image->create(securityImageConstants::PNG);
> ?>
>
> here's the security.image.class.php:
>
> <?
> class securityImageConstants
> {
> const GD = 0;
> const GIF = 1;
> const JPG = 2;
> const PNG = 3;
> }
>
> class securityImage
> {
> public $codeLength = 6;
> public $accentColor = '990000';
> public $fontColor = '990000';
> public $fontSize = 48;
> public $image = null;
> public $securityCode = '';
> public $securityImage = '';
>
> private function __clone(){}
>
> public function __construct($securityCode, $securityImage)
> {
> $this->securityCode = $securityCode;
> $this->securityImage = $securityImage;
> }
>
> private function __copy(){}
>
> public function create($type = securityImageConstants::PNG)
> {
> $imageSize = getimagesize($this->securityImage);
> $this->image = imagecreatefromjpeg($this->securityImage);
> $imageWidth = $imageSize[0];
> $imageHeight = $imageSize[1];
> $accentColor = imagecolorallocate(
> $this->image
> ,
>
hexdec(substr($this->accentColor,
> 0, 2)) ,
>
hexdec(substr($this->accentColor,
> 2, 2)) ,
>
hexdec(substr($this->accentColor,
> 4, 2))
> );
> $fontColor = imagecolorallocate(
> $this->image
> ,
>
hexdec(substr($this->fontColor,
> 0, 2)) ,
>
hexdec(substr($this->fontColor,
> 2, 2)) ,
>
hexdec(substr($this->fontColor,
> 4, 2))
> );
> $fontHeight = imagefontheight($this->fontSize);
> $fontWidth = imagefontwidth($this->fontSize);
> $text = substr(preg_replace('//', '$1 ',
> $this->securityCode), 0, - 1);
> $x = ($imageWidth - strlen($text) * $fontWidth) / 2;
> $y = ($imageHeight - $fontHeight) / 2;
> for ($i = 0; $i < strlen($text); $i++)
> {
> imagechar(
> $this->image ,
> $fontHeight ,
> $x + ($fontWidth * $i) - 1 ,
> $y ,
> $text[$i] ,
> $accentColor
> );
> imagechar(
> $this->image ,
> $fontHeight ,
> $x + ($fontWidth * $i) ,
> $y - 1 ,
> $text[$i] ,
> $fontColor
> );
> }
> switch ($type)
> {
> case securityImageConstants::GD : imagegd($this->image) ; break;
> case securityImageConstants::GIF : imagegif($this->image) ; break;
> case securityImageConstants::JPG : imagejpeg($this->image) ; break;
> default : imagepng($this->image) ; break;
> }
> imagedestroy($this->image);
> }
> }
> ?>
Hi,
I am too lazy to check your whole script, but you should try to get the
error.
This can be done in several ways:
1) Look in your errorlog
2) Call get.security.image.php directly, but change the content-type to
"text/html".
Of course this will return a load of crap on succes, because the imagefile
is not ment to be displayed as text, but you also see the errors.
Good luck,
Regards,
Erwin Moller
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