php gd

[dezkit]

i was googling "php watermark" and i stumbled upon this code.... but i can't get it to work... why?

 

 

index.php

<?php
$image = $HTTP_GET_VARS['image']; // Useful if using in an img tag to call images
$image = str_replace(array("/", ".."), "", $image); // Prevent abuse
$overlay = 'http://www.chestysoft.com/images/watermark.png';
$dir = '../hresources/';
if ($image == NULL) {
    $image = 'http://www.uscg.mil/mlcpac/ischon/mwr/images/club14/club.jpg';
}
if (!file_exists($dir . $image)) {
    die("Image does not exist.");
}
$w_offset = 0;
$h_offset = 0;
$extension = strtolower(substr($image, strrpos($image, ".") + 1));
switch ($extension)
{
    case 'jpg':
        $background = imagecreatefromjpeg($dir . $image);
        break;
    case 'jpeg':
        $background = imagecreatefromjpeg($dir . $image);
        break;
    case 'png':
        $background = imagecreatefrompng($dir . $image);
        break;
    case 'gif':
        $background = imagecreatefromgif($dir . $image);
        break;
    default:
        die("Image is of unsupported type.");
}
$swidth = imagesx($background);
$sheight = imagesy($background);
imagealphablending($background, true);
$overlay = imagecreatefrompng($dir . $overlay);
$owidth = imagesx($overlay);
$oheight = imagesy($overlay);
imagecopy($background, $overlay, $swidth - $owidth - $w_offset, $sheight - $oheight - $h_offset, 0, 0, $owidth, $oheight);
header("Content-type: image/jpeg");
header("Content-Disposition: filename=" . $image);
imagejpeg($background);
imagedestroy($background);
imagedestroy($overlay);

?> 

 

i go into my index.php and it says Image doesn't exist.

[dezkit]

any ideas?

[flyhoney]

<?php

$overlay = 'http://www.chestysoft.com/images/watermark.png';
$dir = '../hresources/';
if ($image == NULL) {
    $image = 'http://www.uscg.mil/mlcpac/ischon/mwr/images/club14/club.jpg';
}
if (!file_exists($dir . $image)) {
    die("Image does not exist.");
}

?>

 

If $image is null its going to try and find an image called "../hresources/http://www.uscg.mil/mlcpac/ischon/mwr/images/club14/club.jpg"

 

Which doesnt really make sense.

 

Make sure the image you are referencing actually exists on your server and that you are referring to it correctly.

[dezkit]

what about this code, i don't understand, i put it in my index.php, what do i do now?

 

<?php 

 

header('content-type: image/jpeg'); 

 

$watermark = imagecreatefrompng('watermark.png'); 

$watermark_width = imagesx($watermark); 

$watermark_height = imagesy($watermark); 

$image = imagecreatetruecolor($watermark_width, $watermark_height); 

$image = imagecreatefromjpeg($_GET['src']); 

$size = getimagesize($_GET['src']); 

$dest_x = $size[0] - $watermark_width - 5; 

$dest_y = $size[1] - $watermark_height - 5; 

imagecopymerge($image, $watermark, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height, 100); 

imagejpeg($image); 

imagedestroy($image); 

imagedestroy($watermark); 

 

?>