PHP 新增浮水印 & 比例縮圖 & 固定高度 & 固定寬度 類別。

//PHP 增加浮水印 & 比例縮圖 & 固定高度 & 固定寬度 類別。
class Image_process{
 public $source; //原圖
 public $source_width; //原圖寬度
 public $source_height; //原圖高度
 public $source_type_id;
 public $orign_name;
 public $orign_dirname;

 //傳入原圖路徑
 public function __construct($source){
 $this->typeList = array(1=> 'gif',2=>'jpg',3=>'png');
 $ginfo = getimagesize($source);
 $this->source_width = $ginfo[0];
 $ this->source_height = $ginfo[1];
 $this->source_type_id = $ginfo[2];
 $this->orign_url = $source;
 $this->orign_name = basename($ source);
 $this->orign_dirname = dirname($source);
 }

 //判斷圖片的檔案的格式，傳回PHP可辨識的編碼
 public function judgeType( $type,$source){
 if($type == 1){
 return imagecreatefromgif($source); //gif
 }else if($type == 2){
 return imagecreatefromjpeg($source); //jpg
 }else if($type == 3){
 return imagecreatefrompng($source); //png
 }else{
 return false;
 }
 }

 //產生浮水印圖片
 public function waterMakeImage($logo){
 $linfo = getimagesize($logo);
 $logo_width = $logo_width = $linfo[0 ];
 $logo_height = $linfo[1];
 $logo_type_id = $linfo[2];
 $sourceHandle = $this->judgeType($this->source_type_id,$this->orign_url) ;
 $logoHandle = $this->judgeType($logo_type_id,$logo);
 if(!$sourceHandle || !$logoHandle){
 return false;
 }
 $x = ($this->source_width - $logo_width)/2;
 $y = ($this->source_height - $logo_height)/2;
 imagecopy($sourceHandle,$logoHandle,$x,$y, 0,0,$logo_width,$logo_height);
 $newPic = $this->orign_dirname.'water_'.time().'.'.$this->typeList[$this->source_type_id];
 if($this->saveImage($sourceHandle,$newPic)){
 imagedestroy($sourceHandle);
 imagedestroy($logoHandle);
 }
 }

 🎜> / /固定高度寬度
 public function fixSizeImage($width,$height){
 if($width > $this->source_width) $this->source_width;
 if($height > $this-> source_height) $this->source_height;
 if($width === false){
 $width = floor($this->source_width / ($this->source_height / $height));
 }
 if($height === false){
 $height = floor($this->source_height / ($this->source_width / $width));
 }
 $this- >tinyImage($width,$height);
 }

 //等比例縮放圖片
 public function scaleImage($scale){
 $width = floor($this->source_widthth-> * $scale);
 $height = floor($this->source_height * $scale);
 $this->tinyImage($width, $height);
 }

 / /建立縮圖
 public function tinyImage($width,$height){
 $tinyImage = imagecreatetruecolor($width,$height);
 $handle = $this->judgeType($this->source_type_id ,$this->orign_url);
 if(function_exists('imagecopyresampled')){
 imagecopyresampled($tinyImage, $handle, 0, 0, 0, 0, $width, $height, $width, $height, $widththis- source_width, $this->source_height);
 }else{
 imagecopyresized($tinyImage, $handle, 0, 0, 0, 0, $width, $height, $this->source_width, $this-> source_height);
 }
 $newPic = $this->orign_dirname.'thumb_'.time().'_'.$width."_".$height.".".$this->typeList [$this->source_type_id];
 if($this->saveImage($tinyImage,$newPic)){
 imagedestroy($tinyImage);
 imagedestroy($handle);
 }
 }
 }
 //儲存圖片
 private function saveImage($image,$url){
 if(imagejpeg($image,$url)){
 return true;
 }
 }
}
$imgHandle = new Image_process('D:AppServwwwtestgetimg14061907445601.jpg');
//$imgHandle->waterMakecmteststesthedMakec.
//$imgHandle->fixSizeImage(200,150); //固定長度圖片
$imgHandle->scaleImage(0.2); //等比例縮放

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PHP、amp