limit = 600;//长宽限制$image->wm_text=”www.linuxlaptop.cn”;//水印文字$image->wm_fontfile=”font/xsuni.ttf”;//字体文件$image->wm_color=”#ff0000″;$image->save_file = “ltcn.jpg”;//保存到xx文件$image->create(“linuxlaptop.jpg”);//从xx文件创建*//*+------------------------------| 生成缩略图&加水印的图片类+------------------------------*/ class gimage{ var $input_type = ; //输入图片的格式var $output_type = jpg; //输出图片的格式var $limit = 0; //图片大小限制var $filename = ; //输入图片的文件名(也可以直接是图片数据)var $jpeg_quality = 90; //jpeg图片质量var $save_file = ''; //输出文件名var $wm_text = ; //水印文字( 不支持中文:'( )var $wm_size = 12; //水印文字大小var $wm_angle = 0; //水印文字角度var $wm_x = 30; //水印x坐标var $wm_y = 30; //水印y坐标var $wm_color = #cccccc; //水印颜色var $wm_fontfile = geodesic.ttf;//水印字体文件 function create($filename=) { if ($filename) $this->filename = $filename; if (!$this->input_type) $this->get_type();if (!$this->output_type) $this->output_type = $this->input_type; if ($this->input_type == jpg) $this->input_type = jpeg;if ($this->output_type == jpg) $this->output_type = jpeg; switch ($this->input_type){ case 'gif': $src_img=imagecreatefromgif($this->filename); break; case 'jpeg': $src_img=imagecreatefromjpeg($this->filename); break; case 'png': $src_img=imagecreatefrompng($this->filename); break; default: $src_img=imagecreatefromstring($this->filename); break; } $src_w=imagesx($src_img);$src_h=imagesy($src_img);if ($src_w>=$src_h){ if ($src_w>$this->limit){ $new_w=$this->limit; $new_h=($this->limit / $src_w)*$src_h; } } else{ if ($src_h>$this->limit){ $new_h=$this->limit; $new_w=($this->limit / $src_h)*$src_w; } } if ($new_h){ $dst_img=imagecreatetruecolor($new_w,$new_h); imagecopyresampled($dst_img,$src_img,0,0,0,0,$new_w,$new_h,imagesx($src_img),imagesy($src_img));} else{ $dst_img = $src_img;} if ($this->wm_text) { if(preg_match(/([a-f0-9][a-f0-9])([a-f0-9][a-f0-9])([a-f0-9][a-f0-9])/i, $this->wm_color, $color)) { $red = hexdec($color[1]); $green = hexdec($color[2]); $blue = hexdec($color[3]); } $wm_color = imagecolorallocatealpha($dst_img, $red, $green, $blue, 90); imagettftext($dst_img, $this->wm_size, $this->wm_angle, $this->wm_x, $this->wm_y, $wm_color, $this->wm_fontfile, $this->wm_text);} if ($this->save_file) { switch ($this->output_type){ case 'gif': $src_img=imagepng($dst_img, $this->save_file); break; case 'jpeg': $src_img=imagejpeg($dst_img, $this->save_file, $this->jpeg_quality); break; case 'png': $src_img=imagepng($dst_img, $this->save_file); break; default: $src_img=imagejpeg($dst_img, $this->save_file, $this->jpeg_quality); break; } } else { header(content-type: image/{$this->output_type}); switch ($this->output_type){ case 'gif': $src_img=imagepng($dst_img); break; case 'jpeg': $src_img=imagejpeg($dst_img, , $this->jpeg_quality); break; case 'png': $src_img=imagepng($dst_img); break; default: $src_img=imagejpeg($dst_img, , $this->jpeg_quality); break; } }imagedestroy($dst_img); } function get_type()//获取图像文件类型{ $name_array = explode(.,$this->filename);if (preg_match(/\.(jpg|jpeg|gif|png)$/, $this->filename, $matches)) { $this->input_type = strtolower($matches[1]);} else { $this->input_type = string;} } }
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