使用PHP+JavaScript将HTML页面转换为图片的实例分享

1，准备要素

1）替换字体的js文件

js代码：

function com_stewartspeak_replacement() {


replaceSelector("h1","dynatext/heading.php",true);//前两个参数需要修改
var testURL = "dynatext/loading.gif" ;//修改为对应的图片路径
 
var donotPrintImages = false;
var printerCSS = "replacement-print.css";
 
var hideFlicker = false;
var hideFlickerCSS = "replacement-screen.css";
var hideFlickerTimeout = 100;//这里可以做相应的修改


 
var items;
var imageLoaded = false;
var documentLoaded = false;
 
function replaceSelector(selector,url,wordwrap)
{
  if(typeof items == "undefined")
    items = new Array();
 
  items[items.length] = {selector: selector, url: url, wordwrap: wordwrap};
}
 
if(hideFlicker)
{    
  document.write('');    
  window.flickerCheck = function()
  {
    if(!imageLoaded)
      setStyleSheetState('hide-flicker',false);
  };
  setTimeout('window.flickerCheck();',hideFlickerTimeout)
}
 
if(doNotPrintImages)
  document.write('');
 
var test = new Image();
test.onload = function() { imageLoaded = true; if(documentLoaded) replacement(); };
test.src = testURL + "?date=" + (new Date()).getTime();
 
addLoadHandler(function(){ documentLoaded = true; if(imageLoaded) replacement(); });
 
 
function documentLoad()
{
  documentLoaded = true;
  if(imageLoaded)
    replacement();
}
 
function replacement()
{
  for(var i=0;i 0) for(var j=0;j -1)
    {
      var bits = token.split('#');
      var tagName = bits[0];
      var id = bits[1];
      var element = document.getElementById(id);
      if(tagName && element.nodeName.toLowerCase() != tagName)
 return new Array();
      currentContext = new Array(element);
      continue;
    }
 
    if(token.indexOf('.') > -1)
    {
      var bits = token.split('.');
      var tagName = bits[0];
      var className = bits[1];
      if(!tagName)
 tagName = '*';
 
      var found = new Array;
      var foundCount = 0;
      for(var h=0;h -1); };
   break;
 default :
   checkFunction = function(e) { return e.getAttribute(attrName); };
      }
 
      currentContext = new Array;
      var currentContextIndex = 0;
      for(var k=0;k

2）生成图片的php文件

[]{}-+_-=' ;
  $box = @ImageTTFBBox($size,0,$font,$test_chars) ;
  return $box[3] ;
}
 
 

function fatal_error($message)
{
  // send an image
  if(function_exists('ImageCreate'))
  {
    $width = ImageFontWidth(5) * strlen($message) + 10 ;
    $height = ImageFontHeight(5) + 10 ;
    if($image = ImageCreate($width,$height))
    {
      $background = ImageColorAllocate($image,255,255,255) ;
      $text_color = ImageColorAllocate($image,0,0,0) ;
      ImageString($image,5,5,5,$message,$text_color) ;  
      header('Content-type: image/png') ;
      ImagePNG($image) ;
      ImageDestroy($image) ;
      exit ;
    }
  }
 
  // send 500 code
  header("HTTP/1.0 500 Internal Server Error") ;
  print($message) ;
  exit ;
}
 
 
  
function hex_to_rgb($hex)
{
  // remove '#'
  if(substr($hex,0,1) == '#')
    $hex = substr($hex,1) ;
 
  // expand short form ('fff') color
  if(strlen($hex) == 3)
  {
    $hex = substr($hex,0,1) . substr($hex,0,1) .
 substr($hex,1,1) . substr($hex,1,1) .
 substr($hex,2,1) . substr($hex,2,1) ;
  }
 
  if(strlen($hex) != 6)
    fatal_error('Error: Invalid color "'.$hex.'"') ;
 
  // convert
  $rgb['red'] = hexdec(substr($hex,0,2)) ;
  $rgb['green'] = hexdec(substr($hex,2,2)) ;
  $rgb['blue'] = hexdec(substr($hex,4,2)) ;
 
  return $rgb ;
}
 
 

function javascript_to_html($text)
{
  $matches = null ;
  preg_match_all('/%u([0-9A-F]{4})/i',$text,$matches) ;
  if(!empty($matches)) for($i=0;$i



3）需要的字体
这里将需要的自己放在与js和php文件同在的一个目录下（也可以修改，但是对应文件也要修改）
4）PHP的GD2库
2，实现的html代码




  
    
    
  
  
    
      Professional Search Engine Optimization with PHP: Table of Contents
    
    
    

      
You: Programmer and Search Engine Marketer
      
A Primer in Basic SEO
      
Provocative SE-Friendly URLs
      
Content Relocation and HTTP Status Codes
      
Duplicate Content
      
SE-Friendly HTML and Javascript
      
Web Syndication and Social Bookmarking
      
Black Hat SEO
      
Sitemaps
      
link Bait
      
IP Cloaking, Geo-Targeting, and IP Delivery
      
Foreign Language SEO
      
Coping with Technical Issues
      
Site Clinic: So You Have a Web Site?
      
WordPress: Creating a SE-Friendly Weblog?
      
Introduction to Regular expression
    
  



3,使用效果前后对比

使用前



使用后