ببین این کد کارت را حل میکنه؟
کد:
function thumbnail($img,$size,$imagebasename,$filetype)
{
$image = $img ;
$imagebasename="thumb".$imagebasename;
$width = $size[0];
$height = $size[1];
$image_dir = "images/uploaded/product";
$newwidth = 130 ;
$newheight = 90 ;
if($filetype == 'image/pjpeg' ) $src = imagecreatefromjpeg($image);
else if($filetype == 'image/gif' ) $src = imagecreatefromgif($image);
else if($filetype == 'image/jpeg' ) $src = imagecreatefromjpeg($image);
$im = imagecreatetruecolor($newwidth,$newheight);
imagecopyresampled($im,$src,0,0,0,0,$newwidth,$new height,$width,$height);
imagejpeg($im, "../$image_dir/thumb/$imagebasename");
imagedestroy($im);
}
این یکی را هم امتحان کن
کد:
<?php
##############################################
# Shiege Iseng Resize Class
# 11 March 2003
# shiegege_at_yahoo.com
# View Demo :
# http://shiege.com/scripts/thumbnail/
/*############################################
Sample :
$thumb=new thumbnail("./shiegege.jpg"); // generate image_file, set filename to resize
$thumb->size_width(100); // set width for thumbnail, or
$thumb->size_height(300); // set height for thumbnail, or
$thumb->size_auto(200); // set the biggest width or height for thumbnail
$thumb->jpeg_quality(75); // [OPTIONAL] set quality for jpeg only (0 - 100) (worst - best), default = 75
$thumb->show(); // show your thumbnail
$thumb->save("./huhu.jpg"); // save your thumbnail to file
----------------------------------------------
Note :
- GD must Enabled
- Autodetect file extension (.jpg/jpeg, .png, .gif, .wbmp)
but some server can't generate .gif / .wbmp file types
- If your GD not support 'ImageCreateTrueColor' function,
change one line from 'ImageCreateTrueColor' to 'ImageCreate'
(the position in 'show' and 'save' function)
*/############################################
class thumbnail
{
var $img;
function thumbnail($imgfile)
{
//detect image format
$this->img["format"]=ereg_replace(".*\.(.*)$","\\1",$imgfile);
$this->img["format"]=strtoupper($this->img["format"]);
if ($this->img["format"]=="JPG" || $this->img["format"]=="JPEG") {
//JPEG
$this->img["format"]="JPEG";
$this->img["src"] = ImageCreateFromJPEG ($imgfile);
} elseif ($this->img["format"]=="PNG") {
//PNG
$this->img["format"]="PNG";
$this->img["src"] = ImageCreateFromPNG ($imgfile);
} elseif ($this->img["format"]=="GIF") {
//GIF
$this->img["format"]="GIF";
$this->img["src"] = ImageCreateFromGIF ($imgfile);
} elseif ($this->img["format"]=="WBMP") {
//WBMP
$this->img["format"]="WBMP";
$this->img["src"] = ImageCreateFromWBMP ($imgfile);
} else {
//DEFAULT
echo "Not Supported File";
exit();
}
@$this->img["lebar"] = imagesx($this->img["src"]);
@$this->img["tinggi"] = imagesy($this->img["src"]);
//default quality jpeg
$this->img["quality"]=75;
}
function size_height($size=100)
{
//height
$this->img["tinggi_thumb"]=$size;
@$this->img["lebar_thumb"] = ($this->img["tinggi_thumb"]/$this->img["tinggi"])*$this->img["lebar"];
}
function size_width($size=100)
{
//width
$this->img["lebar_thumb"]=$size;
@$this->img["tinggi_thumb"] = ($this->img["lebar_thumb"]/$this->img["lebar"])*$this->img["tinggi"];
}
function size_auto($size=100)
{
//size
if ($this->img["lebar"]>=$this->img["tinggi"]) {
$this->img["lebar_thumb"]=$size;
@$this->img["tinggi_thumb"] = ($this->img["lebar_thumb"]/$this->img["lebar"])*$this->img["tinggi"];
} else {
$this->img["tinggi_thumb"]=$size;
@$this->img["lebar_thumb"] = ($this->img["tinggi_thumb"]/$this->img["tinggi"])*$this->img["lebar"];
}
}
function jpeg_quality($quality=75)
{
//jpeg quality
$this->img["quality"]=$quality;
}
function show()
{
//show thumb
@Header("Content-Type: image/".$this->img["format"]);
/* change ImageCreateTrueColor to ImageCreate if your GD not supported ImageCreateTrueColor function*/
$this->img["des"] = ImageCreateTrueColor($this->img["lebar_thumb"],$this->img["tinggi_thumb"]);
@imagecopyresized ($this->img["des"], $this->img["src"], 0, 0, 0, 0, $this->img["lebar_thumb"], $this->img["tinggi_thumb"], $this->img["lebar"], $this->img["tinggi"]);
if ($this->img["format"]=="JPG" || $this->img["format"]=="JPEG") {
//JPEG
imageJPEG($this->img["des"],"",$this->img["quality"]);
} elseif ($this->img["format"]=="PNG") {
//PNG
imagePNG($this->img["des"]);
} elseif ($this->img["format"]=="GIF") {
//GIF
imageGIF($this->img["des"]);
} elseif ($this->img["format"]=="WBMP") {
//WBMP
imageWBMP($this->img["des"]);
}
}
function save($save="")
{
//save thumb
if (empty($save)) $save=strtolower("./thumb.".$this->img["format"]);
/* change ImageCreateTrueColor to ImageCreate if your GD not supported ImageCreateTrueColor function*/
$this->img["des"] = ImageCreateTrueColor($this->img["lebar_thumb"],$this->img["tinggi_thumb"]);
@imagecopyresized ($this->img["des"], $this->img["src"], 0, 0, 0, 0, $this->img["lebar_thumb"], $this->img["tinggi_thumb"], $this->img["lebar"], $this->img["tinggi"]);
if ($this->img["format"]=="JPG" || $this->img["format"]=="JPEG") {
//JPEG
imageJPEG($this->img["des"],"$save",$this->img["quality"]);
} elseif ($this->img["format"]=="PNG") {
//PNG
imagePNG($this->img["des"],"$save");
} elseif ($this->img["format"]=="GIF") {
//GIF
imageGIF($this->img["des"],"$save");
} elseif ($this->img["format"]=="WBMP") {
//WBMP
imageWBMP($this->img["des"],"$save");
}
}
}
?>
و روش استفاده
کد:
<?php
// see online : http://kentung.f2o.org/scripts/thumbnail/sample.php
include_once("resize.php");
$thumb=new thumbnail("/www/shiegege.jpg"); // prepare to generate "shiegege.jpg" in directory "/www"
$thumb->size_width(100); // set width for thumbnail with 100 pixels
$thumb->show(); // show my thumbnail
$thumb->save("/www/thumb/huhu.jpg"); // save my thumbnail to file "huhu.jpg" in directory "/www/thumb
?>
اینم هست
کد:
<?php
function resize_image($file,$new_file)
{
$new_width=150;
$new_height=200;
if(!extension_loaded('gd')&&!extension_loaded('gd2')) {
die("GD is not installed!");
}
list($width,$height,$type)=getimagesize($file);
switch($type)
{
case 1:$img=imagecreatefromgif($file);break;
case 2:$img=imagecreatefromjpeg($file);break;
case 3:$img=imagecreatefrompng($file);break;
default:die('Unsknown file!');
}
$ratio=(float)$height/$width;
$new_ratio=(float)$new_height/$new_width;
if($new_ratio>$ratio)$new_height=round($new_width*$ratio);
else $new_width=round($new_height/$ratio);
$new_img=imagecreatetruecolor($new_width,$new_height);
if(($type==1)||($type==3)){
imagealphablending($new_img,false);
imagesavealpha($new_img,true);
$tmp=imagecolorallocatealpha($new_img,255,255,255,127);
imagefilledrectangle($new_img,0,0,$new_width,$new_height,$tmp);
}
imagecopyresampled($new_img,$img,0,0,0,0,$new_width,$new_height,$width,$height);
switch($type)
{
case 1:imagegif($new_img,$new_file);break;
case 2:imagejpeg($new_img,$new_file);break;
case 3:imagepng($new_img,$new_file);break;
default:die('Failed resize image!');
}
}