標籤：
php處理大量資料，每處理一個資料返回用戶端顯示目前狀態的方法。
類似於dedecms產生靜態頁
想法:
實驗過程：
1.建立資料庫和表
create databases handle;create table user(id int unsigned not null auto_increment primary key,name varchar(8),sex tinyint(1) default ‘1‘,score int not null,state tinyint(1));
2.向表中添加資料（不樣本）
3.建立index.html用戶端，a.php服務端1，b.php服務端2
Index.html:
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>用戶端</title></head><body> <button onclick="send(‘a.php?state=0‘)">開始請求</button> <div style="position: fixed;width: 500px;height: 300px;top: 100px;background: gray"> <span style="color: white;font-size: 20px;"></span> </div> <script type="text/javascript" src="./jquery-1.10.2.min.js"></script> <script type="text/javascript">//建立一個模態框function display(value){ $(‘span‘).html(value);}//ajaxfunction send(dizhi){ $.ajax({ type: "get", url: dizhi, success: function(msg){ var arr=JSON.parse(msg); console.log(arr); //alert(arr.value); var tishi="已經處理 "+arr.now +"個，共"+arr.all+"個"; display(tishi); if(arr.now!=arr.all){ send("a.php?now="+arr.now+"&all="+arr.all); }else{ alert("完成!"); } } });} </script></body></html>
a.php:
<?php require(‘./dbconfig.php‘); $link=mysql_connect(HOST,USER,PASS) or die(‘資料庫連結失敗‘); mysql_select_db(DBNAME);/*查詢資料 $sql="select * from user"; $result=mysql_query($sql); $row=mysql_fetch_assoc($result); var_dump($row);*//*迴圈插入for($i=3;$i<=100;$i++){ $sql= "insert into user(name,score,state) values(‘z".$i."‘,".$i.",1)"; mysql_query($sql);}*//*查詢需要處理的資料總數*///isset($_GET[‘state‘])?$_GET[‘state‘]:0;if(isset($_GET[‘state‘])){ $sql="select count(*) from user"; $result=mysql_query($sql); $all=mysql_result($result,0); $now=0; header("Location: b.php?all={$all}&now=0");}else{ header("Location: b.php?all={$_GET[‘all‘]}&now={$_GET[‘now‘]}");}/*返回當前處理的資料*/
b.php:
<?php require(‘./dbconfig.php‘); $link=mysql_connect(HOST,USER,PASS) or die(‘資料庫連結失敗‘); mysql_select_db(DBNAME);/*返回當前處理的資料*///$id=$_GET[‘id‘];//擷取將要處理的id $now=$_GET[‘now‘];//已經處理的個數 $all=$_GET[‘all‘];//總共要處理的個數 $sql="select score from user limit {$now},1"; $result=mysql_query($sql); $value=mysql_result($result, 0); $now++; $arr=array( ‘now‘=>$now, ‘all‘=>$all, ‘value‘=>$value );//print_r($arr); echo json_encode($arr);
dbconfig.php:
<?phpdefine(‘HOST‘,‘127.0.0.1‘);define(‘USER‘, ‘root‘);define(‘PASS‘,‘root‘);define(‘DBNAME‘,‘handle‘);
以上是全部~
php處理資料庫資料，每處理一個資料返回用戶端顯示目前狀態的方法。
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