Thumbnail generator

[hasini]

Hi

Please help me

 

I'm unable to create Thumnail for Images greater than 1.3 MB

with dimensions 1990px width and 2200px height

 

please help me anyone.....................please

[sKunKbad]

post some code

[The Little Guy]

This should do the trick:

 

http://phpsnips.com/snippet.php?id=5

[sKunKbad]

This is the thumbnail generator class (ThumbnailImage.php) that I use:

 

<?php
//requires GD 2.0.1 or higher
//note about gif
class ThumbnailImage{
private $image;
//not applicable to gif or png
private $quality = 100;
private $mimetype;
private $imageproperties;
private $initialfilesize;
////////////////////////////////////////////////////////
//constructor
////////////////////////////////////////////////////////
public function __construct($file, $thumbnailsize = 100){
	//check path
	is_file($file) or die ("File: $file doesn't exist.");
	$this->initialfilesize = filesize($file);
	$this->imageproperties = getimagesize($file) or die ("Incorrect file type.");
	// new function image_type_to_mime_type
	$this->mimetype = image_type_to_mime_type($this->imageproperties[2]);	
	//create image
	switch($this->imageproperties[2]){
		case IMAGETYPE_JPEG:
			$this->image = imagecreatefromjpeg($file);	
			break;
		case IMAGETYPE_GIF:	
			$this->image = imagecreatefromgif($file);
			break;
		case IMAGETYPE_PNG:
			$this->image = imagecreatefrompng($file);
			break;
		default:
			die("Couldn't create image.");
	}
	$this->createThumb($thumbnailsize);
}
////////////////////////////////////////////////////////
//destructor
////////////////////////////////////////////////////////
public function __destruct(){
	if(isset($this->image)){
		imagedestroy($this->image);			
	}
}
////////////////////////////////////////////////////////
//public methods
////////////////////////////////////////////////////////
public function getImage(){
	header("Content-type: $this->mimetype");
	switch($this->imageproperties[2]){
		case IMAGETYPE_JPEG:
			imagejpeg($this->image,"",$this->quality);
			break;
		case IMAGETYPE_GIF:
			imagegif($this->image);
			break;
		case IMAGETYPE_PNG:
			imagepng($this->image);
			break;
		default:
			die("Couldn't create image.");
	}
}
////////////////////////////////////////////////////////
public function getMimeType(){
  
	return $this->mimetype;
}
////////////////////////////////////////////////////////
public function getQuality(){
	$quality = null;
	if($this->imageproperties[2] == IMAGETYPE_JPEG){
		$quality = $this->quality;
	}
	return $quality;
}
////////////////////////////////////////////////////////
public function setQuality($quality){
	if($quality > 100 || $quality  <  1){
		$quality = 75;
    }
	if($this->imageproperties[2] == IMAGETYPE_JPEG){
		$this->quality = $quality;
	}
}
////////////////////////////////////////////////////////
public function getInitialFileSize(){	
	return $this->initialfilesize;
}
////////////////////////////////////////////////////////
//private methods
////////////////////////////////////////////////////////
private function createThumb($thumbnailsize){
	//array elements
	$srcW = $this->imageproperties[0];
	$srcH = $this->imageproperties[1];
	//only adjust if larger than reduction size
	if($srcW >$thumbnailsize || $srcH > $thumbnailsize){
		$reduction = $this->calculateReduction($thumbnailsize);
		//get proportions
  		$desW = $srcW/$reduction;
  		$desH = $srcH/$reduction;								
		$copy = imagecreatetruecolor($desW, $desH);			
		imagecopyresampled($copy,$this->image,0,0,0,0,$desW, $desH, $srcW, $srcH)
			 or die ("Image copy failed.");			
		//destroy original
		imagedestroy($this->image);
		$this->image = $copy;			
	}
}
////////////////////////////////////////////////////////
private function calculateReduction($thumbnailsize){
	//adjust
	$srcW = $this->imageproperties[0];
	$srcH = $this->imageproperties[1];
  	if($srcW < $srcH){
  		$reduction = round($srcH/$thumbnailsize);
  	}else{  			
  		$reduction = round($srcW/$thumbnailsize);
  	}
	return $reduction;
}
}//end class
////////////////////////////////////////////////////////
?>

 

This is the file (getthumb.php) called by the source of the img tag:

 

<?php
//this file will be the src for an img tag
require 'ThumbnailImage.php';
$path = @$_GET["path"];
$maxsize = @$_GET["size"];
if(!isset($maxsize)){
$maxsize=100;
}
if(isset($path)){
  $thumb = new ThumbNailImage($path, $maxsize);	
  $thumb->getImage();
}
?>

 

Usage:

<img src="getthumb.php?path=../big_pics/Access_road_n_mountains.jpg&size=256" alt= "Access road n mountains" />

 

Give it a try.

[hasini]

tried your code but not working

[sKunKbad]

tried your code but not working

 

You have to have GD 2.0.1 or higher installed, and this only works on php5. I probably should have mentioned that earlier.

[xylex]

Have you checked your memory_limit, upload_max_filesize and post_max_size settings to make sure you're not hitting something there?