/**
* 이미지 흑백처리
* @param [type] $fileName [description]
* @return [type] [description]
*/
public function saveGrayScaleImage($fileName){
$result = false;
$changeName = "";
$fileext = strpos($fileName,'.')===false?'':substr(strrchr($fileName, "."), 1);
$filenameonly = substr($fileName, 0, strlen($fileName)-strlen($fileext)-1);
$filepath = dirname(dirname(BASEPATH).'..')."/".SAVE_DIR_FILES;
// image새로 생성
switch(strtolower($fileext)){
case "png":
$originFile = imagecreatefrompng($filepath."/".$fileName);
imagealphablending($originFile, FALSE);
imagesavealpha($originFile, TRUE);
break;
case "gif":
$originFile = imagecreatefromgif($filepath."/".$fileName);
break;
case "jpg":
case "jpeg":
default:
$originFile = imagecreatefromjpeg($filepath."/".$fileName);
break;
}
// 흑백으로 처리 후 저장
if($originFile && imagefilter($originFile, IMG_FILTER_GRAYSCALE))
{
$changeName = $filepath.$filenameonly."_gray.".$fileext;
switch(strtolower($fileext)){
case "png":
//echo $changeName;
$result = imagepng($originFile, $changeName);
break;
case "gif":
$result = imagegif($originFile, $changeName);
break;
case "jpg":
case "jpeg":
default:
$result = imagejpeg($originFile, $changeName);
break;
}
if(!$result){
$changeName = "";
}
}
return $changeName;
}
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