Image processing Class (improved version)

 $info [0], ' height ' = $info [1], ' type ' =>image_type_to_extension ($info [2],false), ' mime ' = $info [' MIME ']);// Get picture information $type=self:: $info [' type ']; $fun = "imagecreatefrom{$type}"; self:: $image = $fun ($SRC);} /** * @param int $width $height should be declared in the configuration file, you can cancel the parameter * @return thumbnail image resource * thumbnail image formation and use */public function thumb ($width, $ Height) {//New Town color picture $image_thumb =imagecreatetruecolor ($width, $height); #获取图片的宽高比 $src _m = self:: $info [' width ']/self::   $info [' height ']; #源文件空格比 $DST _m = $width/$height; #缩略图宽高比 # source file picture is the width of the N:1 type, change the high if ($src _m > $dst _m) {$cha _width = $width; $cha _height = Ceil ($width/$src _m);} else{#源文件图片是 1:n Type, change the width $cha_width = Floor ($height * $src _m); $cha _height = $height;} #对缩略图的其实位置进行重置 $dst _x = ($width-$cha _width)/2; $dst _y = ($height-$cha _height)/2 imagecopyresampled ($image _thumb, sel F:: $image, $dst _x, $dst _y, 0, 0, $cha _width, $cha _height, Self:: $info [' Width '],self:: $info [' height ']); #生成缩略图self:: $im Age = $image _thumb;//#显示缩略图图片//Self::show (self:: $image); #保存缩Sketch Self::save (Self::getnewname ());//Destroy Picture Imagedestroy ($this->image_thumb); #返回缩略图名字return self::getnewname ();} #水印的生成坐标private static function setLocal ($pos) {#对 The pos parameter, specify the corresponding watermark generation coordinate # Watermark image to be recorded in the config file $conf [' Mark ']switch ($pos) {   Case 1: $x = 0, $y = 0;break; case 2:default: $x = self:: $info [' width ']-50; $y = self:: $info [' Height ']-50; #不该是20 This customization, should be changed to a watermark image of the width of the high}return $local =array (' x ' = $x, ' y ' = $y);} #添加文字水印public function Fontmark ($content, $font _url, $size, $angle) {#字体颜色 $col = Imagecolorallocatealpha (self:: $image, Mt_rand (200,255), Mt_rand (200,255), Mt_rand (200,255), #获取水印输出位置坐标 $local = self::setlocal (2); Imagettftext (self:: $image, $size, $angle, $local [' X '], $local [' Y '], $col, $font _url, $content); #显示缩略图图片self:: Show (self:: $image); #保存文字水印 No save Path added Self::save (Self::getnewname ()); #返回水印图片的名字return Self::getnewname ();  } #添加图片水印public function ImageMark ($url, $alpha) {$info = getimagesize ($url); #获取图片信息 $type =image_type_to_extension ($info [2],false); $fun = "imagecreatefrom{$type}"; #获取水印输出位置坐标 $locaL = self::setlocal (2); $water = $fun ($url); #水印图片imagecopymerge (self:: $image, $water, $local [' X '], $local [' y '],0, 0, $info [0], $info [1], +); #销毁图片水印imagedestroy ( $water); #显示缩略图图片self:: Show (self:: $image), #保存图片水印 no Save Path added Self::save (Self::getnewname ()); #返回水印图片的名字return Self:: Getnewname ();} #生成随机的 Picture Name/** * @return String returns a new name * */private static function Getnewname () {#获取一个时间 $str = time (); #获取随机字符串 $ string = "qwertyuiopasdfghjklzxcvbnmQWERTYUIOASDFGHJKZXCVBNM1234567890"; for ($i =0; $i <6; $i + +) {$str. = $string [Mt_ Rand (0, strlen ($string)-1)];} Return $str. Self:: $info [' type '];} #在浏览器中输出图片private static function Show () {header ("Content-type:". Self:: $info [' mime ']), $funs = "image". Self:: $info [' Type ']; $funs (self:: $image);} #把图片保存到硬盘private static function Save ($newname) {$funs = "image". Self:: $info [' type ']; $funs (self:: $image, $newname. ".".  Self:: $info [' type ']); #在此处加入配置文件的生成目录} #销毁图片public function __destruct () {Imagedestroy (self:: $image);}}

The above describes the image processing class (improved version), including the aspects of the content, I hope the PHP tutorial interested in a friend helpful.

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