Can php convert pages into images?

Parse and convert the compiled html into images on the server side.

Since html is generally parsed by the client browser, the server cannot parse html code directly. So we need to use php class libraries and extensions to complete this requirement.

The file conversion process is html —> pdf —>png. (Recommended learning: PHP video tutorial)

The class library you need to use is mPDF, imagick

pdf. The official download address is: http://www.mpdf1.com/mpdf/index.php (6.0 is recommended, although it is a bit larger) This is a class library that can be directly downloaded and uploaded to the server. There are many things in it. Create a new html2pdf folder and introduce it.

include（'./html2pdf/mpdf'）;

A whole function

/*
名称  html转换为pdf图片
功能  将html页面转换为pdf图片(部分css样式无法识别)
参数数量 2个
1.必须 html代码 可以用file_get_contenth获取
2.必须 生成pdf存放位置路径
3.非必须 pdf宽
4.非必须 pdf高
返回值 图片名称
实例  code($html,'img/1.pdf');
 * */
function html2pdf($html, $PATH, $w=414 ,$h=736){
 //设置中文字体(很重要 它会影响到第二步中 图片生成)
$mpdf=new mPDF('utf-8');
$mpdf->autoScriptToLang = true;
$mpdf->autoLangToFont = true;
//设置pdf的尺寸
$mpdf->WriteHTML(&#39;<pagebreak sheet-size="&#39;.$w.&#39;mm &#39;.$h.&#39;mm" />&#39;);
 
 
//设置pdf显示方式
$mpdf->SetDisplayMode(&#39;fullpage&#39;);
 
//删除pdf第一页(由于设置pdf尺寸导致多出了一页)
$mpdf->DeletePages(1,1);
 
$mpdf->WriteHTML($html);
 
$pdf_name = md5(time()).&#39;.pdf&#39;;
 
$mpdf->Output($PATH.$pdf_name);
 
return $pdf_name;
 
}

The next step is to convert pdf to png images. This step requires installing the ImageMagick component on the server

Then use the function to convert the generated pdf to png.

/*
名称  pdf转换为png图片
功能  将pdf图片转换为png图片
参数数量 2个
1.必须 html代码 可以用file_get_contenth获取
2.必须 生成pdf存放位置路径
 
实例  code($html,'img/1.pdf');
 * */
function pdf2png($PDF, $PNG, $w=50, $h=50){
if(!extension_loaded('imagick')){
return false;
}
if(!file_exists($PDF)){
return false;
}
 
$im = new Imagick();
 
$im->setResolution($w,$h); //设置分辨率
$im->setCompressionQuality(15);//设置图片压缩的质量
 
$im->readImage($PDF);
$im -> resetIterator();
$imgs = $im->appendImages(true);
$imgs->setImageFormat( "png" );
$img_name = $PNG;
$imgs->writeImage($img_name);
$imgs->clear();
$imgs->destroy();
$im->clear();
$im->destroy();
 
return $img_name;
}

ok. The picture of the simple page is basically completed. The picture size is about 1M, which is quite small. clear.

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