Use to ajax for php page

Posted by rueben
July 11, 2009

AJAX Code:

ajaxpg.js

?[Copy to clipboard]View Code JAVASCRIPT
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var http_request=false;
 
  function send_request(url){
 
    http_request=false;
 
    if(window.XMLHttpRequest){
 
     http_request=new XMLHttpRequest();
 
     if(http_request.overrideMimeType){
 
       http_request.overrideMimeType("text/xml");
 
     }
 
    }
 
    else if(window.ActiveXObject){
 
     try{
 
      http_request=new ActiveXObject("Msxml2.XMLHttp");
 
     }catch(e){
 
      try{
 
      http_request=new ActiveXobject("Microsoft.XMLHttp");
 
      }catch(e){}
 
     }
 
    }
 
    if(!http_request){
 
     window.alert("XMLHttp object creation failed");
 
     return false;
 
    }
 
    http_request.onreadystatechange=processrequest;
 
    http_request.open("GET",url,true);
 
    http_request.send(null);
 
  }
 
  function processrequest(){
 
   if(http_request.readyState==4){//Object state
 
     if(http_request.status==200){//return Successful 
 
      document.getElementById(reobj).innerHTML=http_request.responseText;
 
     }
 
     else{ //Exception Errors
 
      alert("Exception Errors!");
 
     }
 
   }
 
  }
 
  function dopage(obj,url){
 
   document.getElementById(obj).innerHTML="Loading...";
 
   send_request(url);
 
   reobj=obj;
 
   }

index.php:

I am a content div on the display, when the flip action arises, the use of AJAX to update DIV to achieve the effect of this is the contents page shows the page code:

?[Copy to clipboard]View Code PHP
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< ?php header("Content-type: text/html;charset=utf-8"); ?>
 
<html>
 
<head>
 
<script language="javascript" src="ajaxpg.js"></script>
 
</head>
 
<body>
<div id="result">
 
< ?php
 
$page=isset($_GET['page'])?intval($_GET['page']):1; 
 
$num=10;  
 
$db=mysql_connect("www.easemarry.com","root","root"); 
 
mysql_select_db("cr_download"); 
 
$result=mysql_query("select * from cr_userinfo");
 
$total=mysql_num_rows($result); 
 
$url='test.php';
$pagenum=ceil($total/$num);
$page=min($pagenum,$page);
 
$prepg=$page-1;
 
$nextpg=($page==$pagenum ? 0 : $page+1);
 
$offset=($page-1)*$num;  
 
$pagenav=":<B>".($total?($offset+1):0)."-<b>".min($offset+10,$total)."</b>,Total:$total";
 
if($pagenum< =1) return false;
 
$pagenav.=" <a href=javascript:dopage('result','$url?page=1');> < < </a> ";
 
if($prepg) $pagenav.=" <a href=javascript:dopage('result','$url?page=$prepg');> < </a> "; else $pagenav.=" < ";
 
if($nextpg) $pagenav.=" <a href=javascript:dopage('result','$url?page=$nextpg');> > </a> "; else $pagenav.=" > ";
 
$pagenav.=" <a href=javascript:dopage('result','$url?page=$pagenum');> >> </a> ";
 
$pagenav.=" page，Total page: $pagenum";
 
If($page>$pagenum){
 
       Echo "Error : Can Not Found The page ".$page;
 
       Exit;
 
}
 
$info=mysql_query("select * from cr_userinfo limit $offset,$num"); 
 
While($it=mysql_fetch_array($info)){
 
       Echo $it['username'];
 
       echo "";
 
} 
 
  echo"";
 
  echo $pagenav;
?>
</div>
 
</body>
</html>

test.php:

The key to flip when the flip is called dopage() function, and then use the callback information to update the content div. The core server-side code

?[Copy to clipboard]View Code PHP
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< ?php
header("Content-type: text/html;charset=utf-8");
 
$page=isset($_GET['page'])?intval($_GET['page']):1; 
 
$num=10;  
 
$db=mysql_connect("www.easemarry.com","root","root"); 
 
mysql_select_db("cr_download"); 
 
$result=mysql_query("select * from cr_userinfo");
 
$total=mysql_num_rows($result); 
 
$url='test.php';
 
$pagenum=ceil($total/$num);
$page=min($pagenum,$page);
 
$prepg=$page-1;
 
$nextpg=($page==$pagenum ? 0 : $page+1);
 
$offset=($page-1)*$num;  
 
$pagenav=":<B>".($total?($offset+1):0)."-<b>".min($offset+10,$total)."</b>,Total:$total";
 
if($pagenum< =1) return false;
 
$pagenav.=" <a href=javascript:dopage('result','$url?page=1');> < < </a> ";
 
if($prepg) $pagenav.=" <a href=javascript:dopage('result','$url?page=$prepg');> < </a> "; else $pagenav.=" < ";
 
if($nextpg) $pagenav.=" <a href=javascript:dopage('result','$url?page=$nextpg');> > </a> "; else $pagenav.=" > ";
 
$pagenav.=" <a href=javascript:dopage('result','$url?page=$pagenum');> >> </a> ";
 
$pagenav.=" page，Total page: $pagenum";
 
If($page>$pagenum){
       Echo "Error : Can Not Found The page ".$page;
       Exit;
}
 
$info=mysql_query("select * from cr_userinfo limit $offset,$num"); 
 
While($it=mysql_fetch_array($info)){
 
       Echo $it['username'];
 
       echo "";
 
} 
 
  echo"";
 
  echo $pagenav;
 
?>

AjAX, PHP, PHP Code

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Comments
Comment by Mr.Carrot25 on October 22, 2009 @ 10:47 pm

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