/**
* GD库 图片缩略图
*/
/*$image = imagecreatefromjpeg("1.jpg");var_dump($image);exit;
$width = imagesx($image);
$height = imagesy($image);
$thumb_width = $width *0.5;
$thumb_height = $height *0.5;
$thumb = imagecreatetruecolor($thumb_width,$thumb_height);//建立一个原图一半大小的画布
imagecopyresampled($thumb,$image,0,0,0,0,$thumb_width,$thumb_height,$width,$height);
imagejpeg($thumb,"1_thumb.jpg",100);//将缩略图保存到文件，第三个参数是质量
imagedestroy($thumb);//清楚占用内存
//图像输出到浏览器
header("Content-type: image/jpeg");
imagejpeg($image);*/
/**
* 图片水印
*/
$image =imagecreatefromjpeg("1.jpg");
$pink = ImageColorAllocate($image,120,180,250);//填充颜色
$font_file ="Candara.ttf";
$str ="php >_< ";
//$str =mb_convert_encoding($str,"UTF-8","GBK");
$str = iconv("GBK", "UTF-8", $str);
imagettftext($image,25,10,100,200,$pink,$font_file,$str);//设置字体颜色
imagejpeg($image,"1_text.jpg",100);//将带有文字的图片保存到文件
imagedestroy($image);
?>
<meta http-equiv="content-Type" content="text/html; charset=utf8"/>
<!--<p>原图</p>
<img src="1.jpg" />
<p>缩略图</p>
<img src="1_thumb.jpg" />-->
<p>合成图：</p>
<img src="1_text.jpg" />php