Share PHP multi-function image processing class, _php tutorial

Share PHP multi-function image processing class,

This example for everyone to share the multi-functional PHP image processing class, for your reference, the specific content as follows

<?php/** * Image.class.php image Processing class * @author Administrator * * */class image{private $path = '; /** * Construction method * @param unknown $path */function __construct ($path = ") {if (!empty ($path)) {$this->p     Ath= $path; }}/** +-----------------------------------------------* ratio scaling function +------------------------------------------ -----* @param unknown $name need to process the name of the picture * @param unknown $width scaled width * @param unknown $height scaled height * @param String $thumb _prixs-scaled prefix name * @return Mixed $newname Returns the scaled file name */function thumb ($name, $width, $height, $thumb _prix s= ' Th_ ') {//get picture information $Info = $this->imageinfo ($name);//image width, height, type//Get picture resources, various types of pictures can create resources, Jpg,gif,png $im     agres= $this->img_resouce ($name, $Info);     Gets the size after calculating the proportions of the picture, $size = $this->getnewsize ($name, $width, $height, $Info);     Get new picture resources, handle transparent background $newimg = $this->getimage ($imagres, $size, $Info); Save as a new picture, return the new scaled picture name $newname = $this->savenewimage ($Newimg, $thumb _prixs $name, $Info);    return $newname; }/** +-----------------------------------------------------------------------* Watermark marker function +------------------- ----------------------------------------------------* @param unknown $backname background file name * @param unknown $watername water Print File name * @param number $waterpos watermark location * @param string $wa _prixs watermark Prefix name * @return Boolean */function Watermar K ($backname, $watername, $waterpos =0, $wa _prixs= ' Wa_ ') {if (File_exists ($this->path. $backname) && File_e              Xists ($this->path $watername)) {$backinfo = $this->imageinfo ($backname);              $waterinfo = $this->imageinfo ($watername);         if (! $pos = $this->getpos ($backinfo, $waterinfo, $waterpos)) {echo "watermark picture should not be smaller than the background picture";       return false;                } $backimg = $this->img_resouce ($backname, $backinfo);        $waterimg = $this->img_resouce ($watername, $waterinfo);     Var_dump ($backimg); exit ();   $backimg = $this->copyimage ($backimg, $waterimg, $pos, $waterinfo);     $this->savenewimage ($backimg, $wa _prixs. $backname, $backinfo);       }else{echo "Picture or watermark does not exist";     return false; }}/** +-----------------------------------------------------------------------* Get picture info function +----------------  -------------------------------------------------------* @param unknown $name * @return Unknown */private     function Imageinfo ($img) {$imageInfo =getimagesize ($img);       if ($imageInfo!==false) {$imageType =strtolower (substr (Image_type_to_extension ($imageInfo [2]), 1));       $imageSize =filesize ($IMG);         $Info =array ("width" = $imageInfo [0], "height" + = $imageInfo [1], "type" = = $imageType,       "Size" = = $imageSize, "mime" = = $imageInfo [' MIME ']);     return $Info;     }else{return false; }     }         /**    +--------------------------------------------------------* Create original image Format Function +--------------------------------------------------------* @param unknown $name * @pa Ram Unknown $imaginfo * @return Boolean|resource */Private Function Img_resouce ($name, $imageinfo) {$iamgeres =     $this->path. $name;      Var_dump ($iamgeres); exit ();          Switch ($imageinfo [' type ']) {case ' gif ': $img =imagecreatefromgif ($name);       Break          Case ' jpg ': $img =imagecreatefromjpeg ($name);       Break          Case ' png ': $img =imagecreatefrompng ($name);                  Break   } return $img; }/** +--------------------------------------------------* Get equal to scaled size function +---------------------------------------     -----------* @param unknown $name * @param unknown $width * @param unknown $height * @param unknown $imaginfo  * @return ambigous
 
  
    */Private Function getnewsize ($name, $width, $height, $imaginfo) {$size [' width ']= $imaginfo [' width '];     $size [' Height ']= $imaginfo [' height '];     if ($width < $imaginfo [' width ']) {$size [' width ']= $width;     } if ($height < $imaginfo [' height ']) {$size [' height ']= $height; }//Image scaling algorithm if ($imaginfo [' width ']* $size [' width ']> $imaginfo [' Height ']* $size [' height ']) {$size [' height ']     ]=round ($imaginfo [' Height ']* $size [' width ']/$imaginfo [' width '];     }else{$size [' Width ']=round ($imaginfo [' width ']* $size [' Height ']/$imaginfo [' height '];    } return $size; } Private Function GetImage ($imageres, $size, $imageinfo) {//Create a new True color image $newimg =imagecreatetruecolor ($size [' width ']     , $size [' height ']);     Defines a color as a transparent color $OTSC =imagecolortransparent ($imageres); Gets the number of colors for the color palette of the image if ($OTSC >=0&& $otsc <=imagecolorstotal ($imageres)) {//Get the color of an index $stran =IMAGEC       Olorsforindex ($imageres, $OTSC);     assigning colors to Images  $newt =imagecolorallocate ($imageres, $stran [' Red '], $stran [' Green '], $stran [' Blue '];       Area fill function Imagefill ($newimg, 0, 0, $NEWT);         Defines the transparent color imagecolortransparent ($newimg, $NEWT) for the image; } imagecopyresized ($newimg, $imageres, 0, 0, 0, 0, $size [' width '], $size [' height '], $imageinfo [' width '], $imageinfo [' H            Eight ']);          Imagedestroy ($imageres);     return $newimg; }/** +----------------------------------------------* Save image function +-------------------------------------------- --* @param unknown $newimg * @param unknown $newname * @param unknown $imageinfo * @return Unknown *         /Private Function Savenewimage ($newimg, $newname, $imageinfo) {switch ($imageinfo [' type ']) {case 1://gif         $result =imagegif ($newimg, $this->path. $newname);       Break         Case 2://jpg $result =imagejpeg ($newimg, $this->path. $newname);       Break Case 3://png $result =imagepng ($newimg, $this->paTh. $newname);     Break     } Imagedestroy ($NEWIMG);    return $newname; }/** +-----------------------------------------------------------------* Get watermark position function +------------------      -----------------------------------------------* @param unknown $backinfo background information * @param unknown $waterinfo watermark Information * @param unknown $waterpos watermark position * @return Boolean|multitype:number returns an array of coordinates */Private function GetPos ($bac Kinfo, $waterinfo, $waterpos) {if ($backinfo [' width ']< $waterinfo [' Width ']| |     $backinfo [' Height ']< $waterinfo [' height ']) {return false;         } switch ($waterpos) {case 1://the upper-left corner $posX = 0;          $posY = 0;       Break         Case 2://above $posX = $backinfo [' width ']-$waterinfo [' Width ']/2;          $posY = 0;       Break         Case 3://the upper right $posX = $backinfo [' width ']-$waterinfo [' width '];          $posY = 0;       Break         Case 4://left Chinese $posX = 0; $posY = $backinfo [' height ']-$waterinfo[' height ']/2;       Break         Case 5://is in the middle $posX = $backinfo [' width ']-$waterinfo [' Width ']/2;          $posY = $backinfo [' height ']-$waterinfo [' Height ']/2;       Break         Case 6://Right Chinese $posX = $backinfo [' width ']-$waterinfo [' width '];          $posY = $backinfo [' height ']-$waterinfo [' Height ']/2;       Break         Case 7://bottom Left $posX = 0;          $posY = $backinfo [' height ']-$waterinfo [' height '];       Break         Case 8://Bottom Center $posX = $backinfo [' width ']-$waterinfo [' Width ']/2;          $posY = $backinfo [' height ']-$waterinfo [' height '];       Break         Case 9://Bottom on right $posX = $backinfo [' width ']-$waterinfo [' width '];          $posY = $backinfo [' height ']-$waterinfo [' height '];       Break         Case 0:default: $posX =rand (0, $backinfo [' width ']-$waterinfo [' width '];          $posY =rand (0, $backinfo [' height ']-$waterinfo [' height '];     Break    } return Array (' PosX ' = $posX, ' posY ' = $posY); }    /**     +-------------------------------------------------------------------* Copy image +-------------------------------------------------------     ------------* @param unknown $backimg background resources * @param unknown $waterimg watermark resource * @param unknown $pos watermark Location * @param unknown $waterinfo Watermark information * @return Unknown */Private Function Copyimage ($backimg, $waterimg, $pos, $ Waterinfo) {imagecopy ($backimg, $waterimg, $pos [' PosX '], $pos [' PosY '], 0, 0, $waterinfo [' width '], $waterinfo [' H     Eight ']);          Imagedestroy ($WATERIMG);    return $backimg;  }}?>
 

The above is the whole content of this article, I hope that you learn PHP programming help.

http://www.bkjia.com/PHPjc/1127896.html www.bkjia.com true http://www.bkjia.com/PHPjc/1127896.html techarticle sharing PHP Multi-function image processing class, this example for everyone to share the multi-functional PHP image processing class, for your reference, specific content as follows PHP/** * Image.class.php Image Processing class * @a ...

