Share PHP Image Watermark Class

This article mainly for you to introduce the PHP image Watermark class package, with a certain reference value, interested in small partners can refer to

Encapsulated PHP Image Watermark class, for your reference, the specific content as follows

<?phpheader (' Content-type:text/html;charset=utf8 '); $img = new Image ();//$img->water (' 2a.jpg ', ' logo.gif ', 0);  Class image{//path protected $path;  Whether to enable the random name protected $isRandName;    The type of image to save protected $type;    Initialize the function __construct ($path = './', $isRandName =true, $type = ' png ') {$this->path = $path by constructing the method team member property;    $this->israndname = $isRandName;  $this->type = $type; }//Public watermark Method/** * @param char $image original * @param char $water watermark picture * @param char $postion position * @param int $ TMP transparency * @param char $prefix prefix */function water ($image, $water, $postion, $tmp =100, $prefix = ' water_ ') {//Determine if the two images are No presence if (!file_exists ($image) | |!    File_exists ($water)) {die (' Picture resource not present ');    }//Get the width of the original image and watermark picture $imageInfo = Self::getimageinfo ($image);    $waterInfo = Self::getimageinfo ($water);    Determine if the watermark image can be affixed to if (! $this->checkimage ($imageInfo, $waterInfo)) {die (' watermark image too large ');    }//Open picture $imageRes = Self::openanyimage ($image); $waterRes = Self::oPenanyimage ($water);    Calculates the coordinates of the watermark image according to the location of the watermark picture $pos = $this->getposition ($postion, $imageInfo, $waterInfo);  Paste the watermark picture over Imagecopymerge ($imageRes, $waterRes, $pos [' X '], $pos [' y '], 0, 0, $waterInfo ["width"], $waterInfo ["Height"],    $TMP);    Get the file name of the picture you want to save $newName = $this->createnewname ($image, $prefix); Get the path to save the picture, that is, the full path of the file $newPath = RTrim ($this->path, '/'). '    /'. $newName;    Save Picture $this->saveimage ($imageRes, $newPath);    Destruction of resources Imagedestroy ($imageRes);        Imagedestroy ($waterRes);  Return the path return $newPath;    }//Save Image Resource protected function saveimage ($imageRes, $newPath) {$func = ' image '. $this->type;  Save $func by variable function ($imageRes, $newPath); }//Get the filename function protected functions createnewname ($imagePath, $prefix) {if ($this->israndname) {$name = $prefix. Uni QID (). '. '.    $this->type; }else {$name = $prefix. PathInfo ($imagePath) [' filename '].    $this->type;  } return $name; }//Calculate the coordinates of the watermark picture according to the location protected function getPosition ($postion, $imageInfo, $waterInfo) {switch ($postion) {Case 1: $x = 0;        $y = 0;      Break        Case 2: $x = ($imageInfo [' width ']-$waterInfo ["width"])/2;        $y = 0;      Break        Case 3: $x = $imageInfo ["width"]-$waterInfo ["width"];        $y = 0;      Break        Case 4: $x = 0;        $y = ($imageInfo ["height"]-$waterInfo ["height"])/2;      Break        Case 5: $x = ($imageInfo [' width ']-$waterInfo ["width"])/2;        $y = ($imageInfo ["height"]-$waterInfo ["height"])/2;      Break        Case 6: $x = $imageInfo ["width"]-$waterInfo ["width"];        $y = ($imageInfo ["height"]-$waterInfo ["height"])/2;      Break        Case 7: $x = 0;        $y = $imageInfo [' height ']-$waterInfo ["height"];      Break        Case 8: $x = ($imageInfo [' width ']-$waterInfo ["width"])/2;        $y = $imageInfo [' height ']-$waterInfo ["height"];      Break   Case 9: $x = $imageInfo ["width"]-$waterInfo ["width"];     $y = $imageInfo [' height ']-$waterInfo ["height"];      Break        Case 0: $x = Mt_rand (0, $imageInfo ["width"]-$waterInfo ["width"]);        $y = Mt_rand (0, $imageInfo [' height ']-$waterInfo ["height"]);    Break  } return [' X ' = $x, ' y ' = ' $y]; } protected function Checkimage ($imageInfo, $waterInfo) {if ($waterInfo [' width '] > $imageInfo [' width ']) | | ($waterInfo [' height '] > $imageInfo [' Height '])    {return false;  } return true; }//static method.    Get information about the picture, width, height, MIME type static function Getimageinfo ($imagePath) {$info = getimagesize ($imagePath) According to the path of the picture;    $data [' width ']= $info [0];    $data [' Height ']= $info [1];    $data [' mime '] = $info [' MIME '];  return $data;    } static function Openanyimage ($imagePath) {//Gets the MIME type of the image $mime = Self::getimageinfo ($imagePath) [' MIME '];          Open different images according to different MIME types switch ($mime) {case ' image/png ': $image = Imagecreatefrompng ($imagePath);      Break Case ' image/gif ': $image = ImagecreaTefromgif ($imagePath);      Break          Case ' image/jpeg ': $image = Imagecreatefromjpeg ($imagePath);      Break          Case ' image/wbmp ': $image = imagecreatefromwbmp ($imagePath);    Break  } return $image; }