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Ajax 提交表單數(shù)據(jù)到入庫(kù)的全盤(pán)操作流程分享

更新時(shí)間：2014年01月08日 15:23:21 作者：

以下是Ajax 提交表單數(shù)據(jù)到入庫(kù)的全盤(pán)操作流程，希望本文對(duì)廣大php開(kāi)發(fā)者有所幫助，感謝閱讀本文

*******php項(xiàng)目中當(dāng)我們要對(duì)數(shù)據(jù)庫(kù)進(jìn)行寫(xiě)入操作時(shí),有時(shí)會(huì)因?yàn)榇a沒(méi)有做防sql注入工作，導(dǎo)致各種不可預(yù)知的錯(cuò)誤*******

1，index.htm 這是一個(gè)很簡(jiǎn)單的注冊(cè)頁(yè)面l 我這是以ajax形式提交數(shù)據(jù)

復(fù)制代碼代碼如下:

 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title>RegisterForm</title> 
<script type="text/javascript" src='jquery-1.3.1.js'></script> 
</head> 
<body> 
<h1>This is a test form! </h1> 
<font color="#8b0000"><table class='tb' border="0" cellpadding="5" cellspacing=0> 
<form action='_process.php' method='post' enctype='multipart/form-data'> 
<tr><td class="tdleft"><em>user :</em></td><td><input type='text' id='name' name='name' value='' size=15/></td></tr> 
<tr><td class="tdleft"><em>ages : </em></td><td><input type='text' id='ages' name='ages' value='' size=15/></td></tr> 
<tr><td class="tdleft"><em>pass : </em></td><td><input type='password' id='password' name='password' value='' size=15/></td></tr> 
<tr><td class="tdleft"><em>addr : </em></td><td><input type='text' id='addr' name='addr' value='' size=15/></td></tr> 
<tr><td class="tdleft"><em>email : </em></td><td><input type='text' name='email' id='email' value='' size=15/></td></tr> 
<tr><td class="tdleft"><input type='button' value='register' id="but"/></td><td><input type='reset' value='reseting'/></td></tr> 
</form> 
</table></font> 
<span id='msg' style='display:none'>正在加載... ...</span> 
<p id="result" class=""></p> 
<style type="text/css"> 
body{text-align:center;} 
.error{color:red;} 
.tb{margin:0 auto;width:350px;height:200px;text-align:center;} 
.tdleft{width:150px;text-align:left;} 
</style> 
<script type='text/javascript'> 
$("#but").click(function(){ 
var name = $.trim($("#name").val()); 
var ages = $.trim($("#ages").val()); 
var pn = /^\d+$/; 
var addr = $.trim($("#addr").val()); 
var pass = $.trim($("#password").val()); 
var email = $.trim($("#email").val()); 
var reg = /^[a-zA-Z0-9_]+@[a-zA-Z0-9_]+(\.[a-zA-Z]+)+$/gi; 
if(name.length==0){ 
alert("請(qǐng)認(rèn)真填寫(xiě)姓名!");return false; 
} 
if(ages.length==0){ 
alert("請(qǐng)?zhí)顚?xiě)年齡!");return false; 
} 
if(!pn.test(ages)){ 
alert("請(qǐng)?zhí)顚?xiě)有效數(shù)字!");return false; 
} 
if(pass.length==0||pass.length>6){ 
alert("請(qǐng)認(rèn)真填寫(xiě)密碼!");return false; 
} 
if(addr.length==0){ 
alert("請(qǐng)認(rèn)真填寫(xiě)地址!");return false; 
} 
if(email.length==0){ 
alert("請(qǐng)認(rèn)真填寫(xiě)郵件!");return false; 
} 
if(!reg.test(email)){ 
alert("電子郵件檢測(cè)失敗");return false; 
} 
var send = {'name':name,'ages':ages,'pass':pass,'addr':addr,'email':email}; 
$.post('_process.php',send,function(data){ 
if(data.res==-1){ 
$("#result").addClass("error"); 
} 
$("#result").html(data.msg); 
//$("form")[0].reset(); 
},'json'); 
}) 
$("#msg").ajaxStart(function(){ 
$(this).fadeIn(); 
}).ajaxStop(function(){ 
$(this).fadeOut(); 
}) 
</script> 
</body> 
</html> 

2,_process.php接收ajax提交數(shù)據(jù) 并做相關(guān)處理的文件

復(fù)制代碼代碼如下:

 
<?php 
header('Content-Type:text/html;charset=utf-8'); 
sleep(1); 
$conn = mysqli_connect("localhost","root","root","register") or die("Unable to connect!".mysqli_connect_error()); 
mysqli_query($link,"set names utf8"); 

$name = isset($_POST['name'])?mysqlQuotes(trim($_POST['name'])):''; 
$ages = isset($_POST['ages'])?intval(trim($_POST['ages'])):''; 
$pass = isset($_POST['pass'])?mysqlQuotes(trim($_POST['pass'])):''; 
$addr = isset($_POST['addr'])?mysqlQuotes(trim($_POST['addr'])):''; 
$email = isset($_POST['email'])?mysqlQuotes(trim($_POST['email'])):''; 
if(empty($name)){ 
echo json_encode(array('res'=>-1,'msg'=>'請(qǐng)您認(rèn)真輸入姓名'));exit; 
} 
//查詢username在 tb_register 表中是否存在,不存在則入庫(kù),存在則告知已注冊(cè) 
$sql0 = "select count(1) as nums from tb_register where username='{$name}'"; 
$row0 = select_one($conn,$sql0); 
if($row0['nums']>=1){ 
echo json_encode(array('res'=>-1,'msg'=>'對(duì)不起,該用戶名已被注冊(cè)!'));exit; 
} 
if(empty($ages)){ 
echo json_encode(array('res'=>-1,'msg'=>'請(qǐng)您認(rèn)真輸入年齡'));exit; 
} 
if(!preg_match("/^\d+$/",$ages)){ 
echo json_encode(array('res'=>-1,'msg'=>'請(qǐng)輸入合法的數(shù)字'));exit; 
} 
if(empty($pass)){ 
echo json_encode(array('res'=>-1,'msg'=>'請(qǐng)您認(rèn)真輸入密碼'));exit; 
} 
if(empty($addr)){ 
echo json_encode(array('res'=>-1,'msg'=>'請(qǐng)您認(rèn)真輸入地址'));exit; 
} 
if(empty($email)){ 
echo json_encode(array('res'=>-1,'msg'=>'請(qǐng)您認(rèn)真輸入郵箱'));exit; 
} 
if(!preg_match("/^[a-zA-Z0-9_]+@[a-zA-Z0-9_]+(\.[a-zA-Z]+)+$/",$email)){ 
echo json_encode(array('res'=>-1,'msg'=>'您的郵箱格式不正確'));exit; 
} 
$add_day = date("YmdHis"); 

//以下是入庫(kù)操作 
$sql = "insert into tb_register set username='{$name}',ages='{$ages}',password='{$pass}',address='{$addr}',email='{$email}',add_day='{$add_day}'"; 
mysqli_query($conn,$sql); 
echo json_encode(array('res'=>1,'msg'=>'恭喜你,注冊(cè)成功!'));exit; 


//預(yù)防m(xù)ysql注入攻擊函數(shù) 入庫(kù)數(shù)據(jù) 
function mysqlQuotes($content){ 
if(!get_magic_quotes_gpc()) //先看看是否開(kāi)啟自動(dòng)過(guò)濾機(jī)制 未開(kāi)啟則手動(dòng)加函數(shù)過(guò)濾 
{ 
$content = addslashes($content); 
} 
return stripslashes(htmlspecialchars($content)); 
} 


function select_one($conn,$sql){ 
$res = mysqli_query($conn,$sql) or die("Failed".mysqli_error()); 
$result = array(); 
if(!empty($res)){ 
$result = mysqli_fetch_assoc($res); 
} 
mysqli_free_result($res); 
return $result; 
} 

******以上自定義函數(shù)mysqlQuotes中**********
Tips1, （PS：T不錯(cuò)的PHP Q扣峮：276167802，驗(yàn)證：csl）
addslashes 函數(shù)的作用是給指定的字符加上反斜杠，主要有以下特殊字符
單引號(hào)(') , 雙引號(hào)(") , 反斜杠(\) , NULL

Tips2,
htmlspecialchars 函數(shù)的作用是把一些特殊的字符轉(zhuǎn)換為html實(shí)體 ,這些特定的字符有：
& (和號(hào)) ==> &
" (雙引號(hào)) ==> "
' (單引號(hào)) ==> '
< (小于號(hào)) ==> <
> (大于號(hào)) ==> >

Tips3,
stripslashes 函數(shù)作用是刪除由addslashes ()函數(shù)添加的飯斜杠,恢復(fù)原來(lái)的摸樣
如，$username 用戶輸入的是 Tom‘siy
存進(jìn)數(shù)據(jù)庫(kù)的是加反斜杠的 Tom\‘siy;

取出來(lái)之則可以用stripslashes() 將其還原輸出 Tom‘siy

以上是本文關(guān)于Ajax 提交表單數(shù)據(jù)到入庫(kù)的全盤(pán)操作流程，希望本文對(duì)廣大php開(kāi)發(fā)者有所幫助，感謝閱讀本文。