|
i have a class that generates thumbnails without making actual file on the server
it works good on my local server
but on my web hosting it gives me "
Fatal error: Call to undefined function: exif_imagetype() in /home/me2resh/public_html/furniture/class_THUMB.php on line 58
"
how can i pass this step and make the script works without using this undefines function
can any one help please ?
here is the class :
<?
//////////////////////////////////////////////////////////////////////////////////////////////
$thumb = new THUMB;
if($_GET["size"]) $thumb->set('thumbSize', $_GET["size"]);
elseif ($_GET["original"]) $thumb->set('originalSize', TRUE);
$thumb->makeThumb($file);
//////////////////////////////////////////////////////////////////////////////////////////////
class THUMB
{
function THUMB() {
# Thumb size default
$this->thumbSize = 50;
# String and color borders
$this->R = 0; // Red
$this->G = 0; // Green
$this->B = 0; // Blue
# Error border
$this->drawBorder = TRUE;
# Image border
$this->drawImgBorder= TRUE;
# Supported files
$this->setSupported(IMAGETYPE_GIF, imageCreateFromGif);
$this->setSupported(IMAGETYPE_JPEG, imageCreateFromJpeg);
$this->setSupported(IMAGETYPE_PNG, imageCreateFromPng);
# Initial position of string
$this->set(initialPixelCol, 3);
$this->set(initialPixelRow, 2);
# Keep Original size
$this->originalSize = FALSE;
}
// Set values
function set($key, $value) {
$this->$key = $value;
}
// Check if image type is supported
function isSupported($file) {
$supported = TRUE;
}
// Return wich function will be used
function retrieveFunction($file) {
# image type
$imageType = exif_imageType($file);
$ext =& $this->supportedExt;
$count =& $ext["count"];
for($i = 0; $i < $count; $i++) {
if($ext["type"][$i] == $imageType) return $ext["function"][$i];
}
}
// supported images types
function setSupported($value, $function) {
$this->supportedExt["type"][] = $value;
$this->supportedExt["function"][] = $function;
$this->supportedExt["count"] = count($this->supportedExt["type"]);
}
// Print string in line
function writeLine($string, $width = FALSE) {
if($width === FALSE) {
$strLen = strlen($string);
$width = ($strLen * 10) - ($strLen * 2.8);
}
$img = ImageCreate ($width+1, 16);
$background = ImageColorAllocate ($img, 255, 255, 255);
$defaultColor = ImageColorAllocate ($img, $this->R, $this->G, $this->B);
if($this->drawBorder) ImageRectangle($img, 0, 0, $width, 15, $defaultColor);
ImageString ($img, 3, $this->initialPixelCol, $this->initialPixelRow, $string, $defaultColor);
header("Content-type: image/jpeg");
Imagejpeg($img);
}
// Generate thumbnail
function makeThumb($file) {
if(file_exists($file)) {
# Dimensُes originais da imagem
list ($width, $height) = GetImageSize ($file);
# If not size
if($this->originalSize) $size = $width; # Original size
else $size = $this->thumbSize; # Default size
# Not supported image
if($this->isSupported($file)) $this->writeLine("Tipo de imagem nمo suportado!");
else {
if ($width > $height) {
# Width greater than height
$newWidth = $size;
$newHeight = ($newWidth * $height) / $width;
} else {
# Height greater than width
$newHeight = $size * .8;
$newWidth = ($newHeight * $width) / $height;
}
$func = $this->retrieveFunction($file);
$src = $func($file);
$dst = ImageCreateTrueColor ($newWidth -1, $newHeight -1);
ImageCopyResized ($dst, $src, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);
if($this->drawImgBorder) ImageRectangle($dst, 0, 0, $newWidth -2, $newHeight -2, $defaultColor);
header("Content-type: image/jpeg");
Imagejpeg($dst);
}
} else $this->writeLine("Imagem nمo encontrada!");
}
}
?>
| 
