PHP GD Round chart-processing into a circle picture

1<?PHP2  /**3 * processed into a circle picture, if the picture is not a square, take the smallest edge of the circle radius, from the left to cut into a circle4 * @param string $imgpath [description]5 * @return [Type] [description]6  */7     functionYuan_img ($imgpath= './code_png/share.jpg ') {8         $ext=PathInfo($imgpath);9         $src _img=NULL;Ten         Switch($ext[' extension ']) { One              Case' jpg ': A                 $src _img= Imagecreatefromjpeg ($imgpath); -                  Break; -              Case' PNG ': the                 $src _img= Imagecreatefrompng ($imgpath); -                  Break; -         } -         $WH=getimagesize($imgpath); +         $w=$WH[0]; -         $h=$WH[1]; +         $w=min($w,$h); A         $h=$w; at         $img= Imagecreatetruecolor ($w,$h); -         //This sentence must have -Imagesavealpha ($img,true); -         //pick a completely transparent color and the last parameter 127 is fully transparent -         $BG= Imagecolorallocatealpha ($img, 255, 255, 255, 127); -Imagefill ($img, 0, 0,$BG); in         $r=$w/2;//Circle Radius -         $y _x=$r;//Center X coordinate to         $y _y=$r;//Center Y coordinate +          for($x= 0;$x<$w;$x++) { -              for($y= 0;$y<$h;$y++) { the                 $rgbColor= Imagecolorat ($src _img,$x,$y); *                 if(((($x-$r) * ($x-$r) + ($y-$r) * ($y-$r)) < ($r*$r))) { $Imagesetpixel ($img,$x,$y,$rgbColor);Panax Notoginseng                 } -             } the         } +  A         return $img; the } +  - Header("Content-type:image/png"); $Imagepng (Yuan_img ());

PHP GD Round chart-processing into a circle picture