お試しブログ～BlognPlus～

$error = blogn_mod_db_file_add($user_id, $file_name, $comment);

@chmod($dest,0666);

// 最大サイズを超える画像をリサイズする

if ($size = @getimagesize($dest)) {

	if ($size[0] > BLOGN_MAXWIDTH || $size[1] > BLOGN_MAXHEIGHT) {

		$ratio1 = BLOGN_MAXWIDTH / $size[0];

		$ratio2 = BLOGN_MAXHEIGHT / $size[1];

		if ($ratio1 < $ratio2) {

			$ratio = $ratio1;

		}else{

			$ratio = $ratio2;

		}

		$rwidth = round($size[0] * $ratio);

		$rheight = round($size[1] * $ratio);

		$file_type = strtolower(end(explode('.', $dest)));

		if ($file_type === "jpg" || $file_type === "jpeg") {

			$in = ImageCreateFromJPEG($dest);

			$out = ImageCreateTrueColor($rwidth, $rheight);

			ImageCopyResampled($out, $in, 0, 0, 0, 0, $rwidth, $rheight, $size[0], $size[1]);

			ImageJPEG($out, $dest, 100); 

		} elseif ($file_type === "gif") {

			$in = ImageCreateFromGIF($dest);

			$out = ImageCreateTrueColor($rwidth, $rheight);

			ImageCopyResampled($out, $in, 0, 0, 0, 0, $rwidth, $rheight, $size[0], $size[1]);

			ImageGIF($out, $dest, 100); 

		} elseif ($file_type === "png") {

			$in = ImageCreateFromPNG($dest);

			$out = ImageCreateTrueColor($rwidth, $rheight);

			ImageCopyResampled($out, $in, 0, 0, 0, 0, $rwidth, $rheight, $size[0], $size[1]);

			imagealphablending($out, false);

			imagesavealpha($out, true);

			ImagePNG($out, $dest, 9); 

		} else {

			return;

		}

		ImageDestroy($in);

		ImageDestroy($out);

	}

}