array getimagesize ( string $filename [, array &$imageinfo ] ) 取得图像大小
resource imagecreatetruecolor ( int $x_size , int $y_size ) 新建一个真彩色图像
resource imagecreatefromjpeg ( string $filename ) 从 JPEG 文件或 URL 新建一图像
bool imagecopyresized ( resource $dst_image , resource $src_image , int $dst_x , int $dst_y , int $src_x , int $src_y , int $dst_w , int $dst_h , int $src_w , int $src_h ) 拷贝部分图像并调整大小
bool imagejpeg ( resource $image [, string $filename [, int $quality ]] ) 以 JPEG 格式将图像输出到浏览器或文件
复制代码 代码如下:
/*
Created by
http://www.cnphp.info */
// 文件及缩放尺寸
//$imgfile = 'smp.jpg';
//$percent = 0.2;
header('Content-type: image/jpeg');
list($width, $height) = getimagesize($imgfile);
$newwidth = $width * $percent;
$newheight = $height * $percent;
$thumb = ImageCreateTrueColor($newwidth,$newheight);
$source = imagecreatefromjpeg($imgfile);
imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
imagejpeg($thumb);
?>
http://www.bkjia.com/PHPjc/323653.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/323653.htmlTechArticlearray getimagesize ( string $filename [, array lt;?php /* Created by A href="http://www.cnphp.info"http://www.cnphp.info/A */ // 文件及缩放尺寸 //$imgfile = 'smp.jpg'; //$per...
