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function getPicture($url,$pictureName){ if ($url == "") return false; //获取图片的扩展名 $info = getimagesize($url); $mime = $info['mime']; $type = substr(strrchr($mime,'/'), 1); //不同的图片类型选择不同的图片生成和保存函数 switch($type){ case 'jpeg': $img_create_func = 'imagecreatefromjpeg'; $img_save_func = 'imagejpeg'; $new_img_ext = 'jpg'; break; case 'png': $img_create_func = 'imagecreatefrompng'; $img_save_func = 'imagepng'; $new_img_ext = 'png'; break; case 'bmp': $img_create_func = 'imagecreatefrombmp'; $img_save_func = 'imagebmp'; $new_img_ext = 'bmp'; break; case 'gif': $img_create_func = 'imagecreatefromgif'; $img_save_func = 'imagegif'; $new_img_ext = 'gif'; break; case 'vnd.wap.wbmp': $img_create_func = 'imagecreatefromwbmp'; $img_save_func = 'imagewbmp'; $new_img_ext = 'bmp'; break; case 'xbm': $img_create_func = 'imagecreatefromxbm'; $img_save_func = 'imagexbm'; $new_img_ext = 'xbm'; break; default: $img_create_func = 'imagecreatefromjpeg'; $img_save_func = 'imagejpeg'; $new_img_ext = 'jpg'; } if ($pictureName == ""){ $pictureName = time().".{$new_img_ext}"; }else{ $pictureName = $pictureName.".{$new_img_ext}"; } $src_im = $img_create_func($url); //由url创建新图片 $img_save_func($src_im, $pictureName); //输出文件到文件 return $pictureName; }