PHP 添加水印 & 比例缩略图 & 固定高度 & 固定宽度 类。

<?php //PHP 添加水印 & 比例缩略图 & 固定高度 & 固定宽度 类。class Image_process{public $source;//原图public $source_width;//原图宽度public $source_height;//原图高度public $source_type_id;public $orign_name;public $orign_dirname;//传入原图路径public function __construct($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($source);}//判断图片的文件的格式，返回PHP可识别的编码public function judgeType($type,$source){if($type == 1){return imagecreatefromgif($source); //gif}else if($type == 2){return imagecreatefromjpeg($source); //jpg}else if($type == 3){return imagecreatefrompng($source); //png}else{return false;}}//生成水印图片public function waterMakeImage($logo){$linfo = getimagesize($logo);$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);}}//固定高度宽度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);}//等比例缩放图片public function scaleImage($scale){$width = floor($this->source_width * $scale);$height = floor($this->source_height * $scale);$this->tinyImage($width, $height);}//创建缩略图public function tinyImage($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, $this->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);}}//保存图片private function saveImage($image,$url){if(imagejpeg($image,$url)){return true;}}}$imgHandle = new Image_process('D:\AppServ\www\test\getimg\14061907445601.jpg');//$imgHandle->waterMakeImage('D:\AppServ\www\test\getimg\shougongke.png');//生成水印图片//$imgHandle->fixSizeImage(200,150);//固定长度图片$imgHandle->scaleImage(0.2);//等比例缩放?>