private function cropImg($Image, $Dw, $Dh, $Type = 2)
{
if ($Type != 1) {
$tmp = realpath(APPPATH . '../upload') . '/' . str_replace('.', '_' . $Dw . '.', $Image);
$Image = realpath(APPPATH . '../upload') . '/' . $Image;
copy($Image, $tmp) or die('error');
$Image = $tmp;
}
if (!file_exists($Image)) {
echo "不存在图片";
return false;
}
$ImgInfo = getimagesize($Image);
switch ($ImgInfo[2]) {
case 1:
$fn = 'imagegif';
$im = @imagecreatefromgif($Image);
break;
case 2:
$fn = 'imagejpeg';
$im = @imagecreatefromjpeg($Image);
break;
case 3:
$fn = 'imagepng';
$im = @imagecreatefrompng($Image);
break;
default:
echo "格式不支持";
return false;
}
$w = ImagesX($im);
$h = ImagesY($im);
$width = $w;
$height = $h;
if ($width > $Dw) {
$Par = $Dw / $width;
$width = $Dw;
$height = $height * $Par;
if ($height > $Dh) {
$Par = $Dh / $height;
$height = $Dh;
$width = $width * $Par;
}
} elseif ($height > $Dh) {
$Par = $Dh / $height;
$height = $Dh;
$width = $width * $Par;
if ($width > $Dw) {
$Par = $Dw / $width;
$width = $Dw;
$height = $height * $Par;
}
} else {
$width = $width;
$height = $height;
}
$nImg = imagecreatetruecolor($width, $height);
imagealphablending($nImg, false);
imagesavealpha($nImg, true);
ImageCopyReSampled($nImg, $im, 0, 0, 0, 0, $width, $height, $w, $h);
$fn($nImg, $Image);
return true;
}
function Img($Image, $Dw = 200, $Dh = 300, $Type = 2)
{
if (!File_Exists($Image)) {
return False;
}
#如果需要生成缩略图,则将原图拷贝一下重新给$Image赋值
// IF($Type!=1){
Copy($Image, Str_Replace(".", "_x.", $Image));
$Image = Str_Replace(".", "_x.", $Image);
// }
var_dump($Image);
#取得文件的类型,根据不同的类型建立不同的对象
$ImgInfo = GetImageSize($Image);
var_dump($ImgInfo);
switch ($ImgInfo[2]) {
case 1:
$Img = @ImageCreateFromGIF($Image);
break;
case 2:
$Img = @ImageCreateFromJPEG($Image);
break;
case 3:
$Img = @ImageCreateFromPNG($Image);
break;
}
#如果对象没有创建成功,则说明非图片文件
if (empty($Img)) {
#如果是生成缩略图的时候出错,则需要删掉已经复制的文件
if ($Type != 1) {
Unlink($Image);
}
return False;
}
#如果是执行调整尺寸操作则
if ($Type == 1) {
$w = ImagesX($Img);
$h = ImagesY($Img);
$width = $w;
$height = $h;
if ($width > $Dw) {
$Par = $Dw / $width;
$width = $Dw;
$height = $height * $Par;
if ($height > $Dh) {
$Par = $Dh / $height;
$height = $Dh;
$width = $width * $Par;
}
} elseif ($height > $Dh) {
$Par = $Dh / $height;
$height = $Dh;
$width = $width * $Par;
if ($width > $Dw) {
$Par = $Dw / $width;
$width = $Dw;
$height = $height * $Par;
}
} else {
$width = $width;
$height = $height;
}
$nImg = ImageCreateTrueColor($width, $height);
#新建一个真彩色画布
ImageCopyReSampled($nImg, $Img, 0, 0, 0, 0, $width, $height, $w, $h);
#重采样拷贝部分图像并调整大小
ImageJpeg($nImg, $Image);
#以JPEG格式将图像输出到浏览器或文件
return True;
#如果是执行生成缩略图操作则
} else {
$w = ImagesX($Img);
$h = ImagesY($Img);
$width = $w;
$height = $h;
$nImg = ImageCreateTrueColor($Dw, $Dh);
if ($h / $w > $Dh / $Dw) {
#高比较大
$width = $Dw;
$height = $h * $Dw / $w;
$IntNH = $height - $Dh;
ImageCopyReSampled($nImg, $Img, 0, -$IntNH / 1.8, 0, 0, $Dw, $height, $w, $h);
} else {
#宽比较大
$height = $Dh;
$width = $w * $Dh / $h;
$IntNW = $width - $Dw;
ImageCopyReSampled($nImg, $Img, -$IntNW / 1.8, 0, 0, 0, $width, $Dh, $w, $h);
}
ImageJpeg($nImg, $Image);
return True;
}
}
ImageSaveAlpha($thumb, true);
//这里很重要,意思是不要丢了$thumb图像的透明色;
$color = imagecolorallocatealpha($thumb, 0, 0, 0, 127);
ImageFill($thumb, 0, 0, $color);
ImageColorTransparent($thumb, $color);
} else {
$white = ImageColorAllocate($thumb, 255, 255, 255);
ImageFill($thumb, 0, 0, $white);
ImageColorTransparent($thumb, $white);
}
if (isset($_GET["square"])) {
//正方形补白边
ImageCopyReSampled($thumb, $dest, $left, $top, 0, 0, $twidth, $theight, $nwidth, $nheight);
} else {
//长宽去白边
ImageCopyReSampled($thumb, $dest, $margin, $margin, 0, 0, $twidth, $theight, $nwidth, $nheight);
}
}
ImageDestroy($dest);
if (!$_GET["nomark"]) {
if ($fwidth > 620 || $fheight > 620) {
$logo = ImageCreateFrompng("./images/logo220.png");
$logosize = 220;
} else {
$logo = ImageCreateFrompng("./images/logo130.png");
$logosize = 130;
}
ImageSaveAlpha($logo, true);
if (isset($_GET["square"])) {
//正方形补白边
ImageCopy($thumb, $logo, $size - $logosize + $margin, $size - $logosize + $margin, 0, 0, $logosize, $logosize);
