httpcreditcard.bankcomm.com uses PHP to implement image sharpening code

//Type of read image
　 //1 = GIF, 2 = JPG, 3 = PNG, 4 = SWF, 5 = PSD, 6 = BMP, 7 = TIFF (intel byte order), 8 = TIFF (motorola byte order), 9 = JPC, 10 = JP2, 11 = JPX, 12 = JB2, 13 = SWC, 14 = IFF
　function GetImageType($filename) {return (($imginfo=@getimagesize($filename)) !=null ? $imginfo[2] : null);} ​​
​ //Image sharpening
​ //$scr_im: image resource handle, $degree: sharpening degree
​ function Sharp(&$src_im, &$dst_im, $degree )
　{
　 $src_x = imagesx($src_im);
　 $src_y = imagesy($src_im);
　 //$dst_im = imagecreate($src_x, $src_y);
　 //imagecopy($ dst_im, $src_im, 0 , 0, 0, 0, $src_x, $src_y);
　 $cnt = 0;
　 for ($x=1; $x<$src_x; $x++)
　 for ($y=1; $y<$src_y ; $ Y ++)
{
$ SRC_CLR1 = ImageColorsforindex ($ SRC_IM, ImageColoraat ($ src_im, $ x-1, $ y-1)); C_im, ImageColoLORT ($ SRC_IM, $ x, $ y));
$r = intval($src_clr2["red"]+$degree*($src_clr2["red"]-$src_clr1["red"]));
$g = intval($src_clr2[" green"]+$degree*($src_clr2["green"]-$src_clr1["green"]));
　 $b = intval($src_clr2["blue"]+$degree*($src_clr2["blue" ]-$src_clr1["blue"]));
　 $r = min(255, max($r, 0));
　 $g = min(255, max($g, 0));
　 $b = min(255, max($b, 0));
　 //echo "r:$r, g:$g, b:$b
";
　 if (($dst_clr=imagecolorexact($dst_im , $r, $g, $b))==-1)
$dst_clr = Imagecolorallocate($dst_im, $r, $g, $b);
$cnt++;
if ($dst_clr==-1) die ("color allocate fail at $x, $y ($cnt).");
　 imagesetpixel($dst_im, $x, $y, $dst_clr);
　 }
　 return $dst_im; functions = array( "imagecreatefromwbmp", "imagecreatefromgif", "imagecreatefromjpeg", "imagecreatefrompng");
　if (!empty($_POST["ImageName"]))
　{
　set_time_limit(10*60);
　　if (($Im ageType=GetImageType ($_POST["ImageName"]))==false)
　 die("The specified file does not exist or is not a valid image or does not support the type! ");
　 if ($ImageType==6) $ImageType = 0;
　 if ($ImageType>3) die("Unsupported image type!");
　 $im1 = $ImageFunctions[$ImageType]($_POST["ImageName"]);
　 $im2 = $ImageFunctions[$ImageType]($_POST["ImageName"]);
　 //print_r(imagecolorsforindex(( $im, imagecolorat($im, 10, 10)));
Sharp($im1, $im2, $_POST["Degree"]);
header("Content-type: image/png");
imagepng( $im2);
　imagedestroy($im1);
　imagedestroy($im2); Path or URL:

　" size=32>

　 Sharpening degree (for example: 0.6, 3.0):

　

　
　
　Changed it a bit, saving one $im:
function Sharp2(&$im , $degree)
　{
　 $cnt = 0;
　 for ($x=imagesx($im)-1; $x>0; $x--)
　 for ($y=imagesy($im)-1; $y>0; $y--)
　　 {
　 $clr1 = imagecolorsforindex($im, imagecolorat($im, $x-1, $y-1)); im, $x, $y));
　 $r = intval($clr2["red"]+$degree*($clr2["red"]-$clr1["red"]));
　 $g = intval($clr2["green"]+$degree*($clr2["green"]-$clr1["green"]));
　 $b = intval($clr2["blue"]+$degree*( $clr2["blue"]-$clr1["blue"]));
　 $r = min(255, max($r, 0));
　 $g = min(255, max($g, 0) );
　 $b = min(255, max($b, 0));
　 //echo "r:$r, g:$g, b:$b
";
　 if (($new_clr= imagecolorexact($im, $r, $g, $b))==-1)
　 $new_clr = Imagecolorallocate($im, $r, $g, $b);
　 $cnt++;
　 if ($new_clr== -1) die("color allocate faile at $x, $y ($cnt).");
　 imagesetpixel($im, $x, $y, $new_clr);
　 }
　 }
The above introduces the image sharpening code implemented by httpcreditcard.bankcomm.com using PHP, including the content of httpcreditcard.bankcomm.com. I hope it will be helpful to friends who are interested in PHP tutorials.