php頁面怎麼寫
⑴ 如何用php在網頁上製作一個簡單的用戶登錄頁面能發個代碼給我嗎
下面代碼直接可以用的
<?php
// 是否需要密碼驗證,1為需要驗證,其他數字為直接進入.下面選項則無讓簡絕效
$admin['check'] = "1";
// 如果需要密碼驗證,請修改登陸密碼
$admin['pass'] = "password";
if($admin['check'] == "1") {
if ($_GET['action'] == "logout") {
setcookie ("adminpass", "");
echo "<meta http-equiv=\"refresh\" content=\"3;URL=".$_SERVER['PHP_SELF']."\">";
echo "<span style=\"font-size: 12px; font-family: Verdana\">注銷成功......<p><a href=\"".$self."\"咐頃>三秒後自動退出或單擊這里坦姿退出程序界面 >>></a></span>";
exit;
}
if ($_POST['do'] == 'login') {
$thepass=trim($_POST['adminpass']);
if ($admin['pass'] == $thepass) {
setcookie ("adminpass",$thepass,time()+(1*24*3600));
echo "<meta http-equiv=\"refresh\" content=\"3;URL=".$self."\">";
echo "<span style=\"font-size: 12px; font-family: Verdana\">登陸成功......<p><a href=\"".$self."\">三秒後自動跳轉或單擊這里進入程序界面 >>></a></span>";
exit;
}
}
if (isset($_COOKIE['adminpass'])) {
if ($_COOKIE['adminpass'] != $admin['pass']) {
loginpage();
}
} else {
loginpage();
}
}
///////////////////////////// 這里是你登錄後能看到的
?>
<a href="?action=logout">logout</a>
<?php
///////////////////////////////下面是登錄頁面的函數
function loginpage() {
?>
<style type="text/css">
input {font-family: "Verdana";font-size: "11px";BACKGROUND-COLOR: "#FFFFFF";height: "18px";border: "1px solid #666666";}
</style>
<form method="POST" action="">
<span style="font-size: 11px; font-family: Verdana">Password: </span><input name="adminpass" type="password" size="20">
<input type="hidden" name="do" value="login">
<input type="submit" value="Login">
</form>
<?php
exit;
}//end loginpage()
⑵ 如何寫PHP 判斷當前時間是否大於下午6點
需要准備的材料分別是:電腦、php編輯器、瀏覽器。
1、首先,打開php編輯器,新建php文件,例如:index.php。
⑶ PHP做一個用戶登錄頁面
index.html登錄頁面代碼如下:
<!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=gb2312" />
<title>登錄示例</title>
</head>
<body>
<form id="forms" name="forms" method="post" action="loginchk.php">
用戶名:<input type="text" id="uname" name="uname" value=""/><br/>
密碼:<input type="password" id="upass" name="upass" value=""/><br/>
<input type="submit" id="loginbtn" value="立即登錄"/>
<input type="reset" id="resetbtn" value="重新填寫"/>
</form>
</body>
</html>
loginchk.php 的PHP程序代碼如下:
<?php
$uname=trim($_REQUEST["uname"]);
$upass=trim($_REQUEST["upass"]);
if($uname=="admin"&&$upass=="admin")
{
echo "登錄成功";
}
else
{
echo "登錄失敗,<a href='index.html'>重新登錄</a>";
}
?>
以上只是一個簡單示例,真正的開始,需要考到很多因素,比如說登錄前有效性檢查,加入登錄驗證碼,程序需要連接資料庫進行用戶匹配等。
希望對你有幫助 。
如果使用資料庫進行進行匹配的話,PHP程序可以這樣改進一下。
<?php
$uname=trim($_REQUEST["uname"]);
$upass=trim($_REQUEST["upass"]);
$con = mysql_connect("localhost","root","root");
mysql_select_db("dbname", $con);
$result = mysql_query("select * from sers where uname='$uname' and upass='$upass'");
$rs = mysql_fetch_array($result);
if($rs)
{
echo "登錄成功";
}
else
{
echo "登錄失敗,<a href='index.html'>重新登錄</a>";
}
?>
不過你需要連接到你自己的指定的資料庫和數據表。
⑷ 用PHP做登陸注冊頁面
登錄頁:login.php
<?php
include("conn.php");
$username=$_POST['name'];
$password=$_POST['password'];
$yanzheng=$_POST['yanzheng'];
if(isset($_POST['submit']))
{
$sql=("select username,password from member where username='$username' and password='$password'") or die("sql語句執行失敗");
//print_r($sql);
$ar=mysql_query($sql);
if($ar)
{
if($row=mysql_fetch_array($ar))
{
session_start();
if($_POST["yanzheng"])
{
if($yanzheng!=$_session[pic]||$yanzheng=="")
{
echo "驗證碼輸入有誤";
exit;
}
if($yanzheng==$_session[pic])
{
header("location:index.php");
}
}
}
else
{
echo "用戶名或密碼錯誤";
}
}
}
?>
<form action="login.php" method="post">
<table border=1 align=center width=500 height=300 bgColor=#DFFFDF bordercolor=#fffbec>
<tr>
<td colspan=2 align=center>用戶登錄</td>
</tr>
<tr>
<td>用戶姓名:</td>
<td><input type="text" name="name" id="name"/></td>
</tr>
<tr>
<td>用戶密碼:</td>
<td><input type="password" name="password" id="password"/></td>
</tr>
<tr>
<td>驗證碼:</td>
<td><input type="text" name="yanzheng" id="yanzheng"/>
<img src="yanzheng1.php" width="50" height="30"></img>
</td>
</tr>
<tr>
<td colspan=3 align=center>
<input type="submit" name="submit" value="登錄"/>
<input type="reset" name="reset" value="重置"/>
<a href="register.php">注冊</a>
</td>
</tr>
</table>
</form>
注冊頁:register.php
<?php
include("conn.php");
if(isset($_POST['submit'])&&$_POST['submit']) {
if($_POST['username']=='')
{
echo "用戶名不能為空";
exit();
}
if($_POST['password']=='')
{
echo "密碼不能為空";
exit();
}
if($_POST['realpass']!=$_POST['password'])
{
echo "兩次密碼輸入不一致";
exit();
}
$sql="insert into member(username,real_name,password,email,headimg) values('$_POST[username]','$_POST[username]','$_POST[password]','$_POST[email]','')";
$ar=mysql_query($sql);
if($ar)
{
header("location:index.php");
}
else
{
echo mysql_error();
}
}
?>
<body>
<form action="register.php" method="post">
<table border=1 align=center width=500>
<tr>
<td height=40 bgColor=#DFFFDF colspan=2>會員注冊 [<a href="login.php">返回登錄頁</a>]</td>
</tr>
<tr>
<td height=40 bgColor=#fffbec >會員ID</td>
<td><input type="text" name="username" id="username"/></td>
</tr>
<tr>
<td height=40 bgColor=#fffbec>密碼</td>
<td><input type="password" name="password" id="password"/></td>
</tr>
<tr>
<td height=40 bgColor=#fffbec>確認密碼</td>
<td>
<input type="password" name="realpass" id="realpass"/>
</td>
</tr>
<tr>
<td height=40 bgColor=#fffbec>EMAIL</td>
<td><input type="text" name="email" id="email"/>
</tr>
<tr>
<td height=40 bgColor=#fffbec></td>
<td><input type="submit" name="submit" value="注冊"/><input type="reset" value="重置"></td>
</tr>
</table>
</form>
</body>
主頁顯示:index.php
<?php
include("conn.php");
function cutstr($str,$cutleng)
{
$str = $str; //要截取的字元串
$cutleng = $cutleng; //要截取的長度
$strleng = strlen($str); //字元串長度
if($cutleng>$strleng)return $str;//字元串長度小於規定字數時,返回字元串本身
$notchinanum = 0; //初始不是漢字的字元數
for($i=0;$i<$cutleng;$i++)
{
if(ord(substr($str,$i,1))<=128)
{
$notchinanum++;
}
}
if(($cutleng%2==1)&&($notchinanum%2==0)) //如果要截取奇數個字元,所要截取長度范圍內的字元必須含奇數個非漢字,否則截取的長度加一
{
$cutleng++;
}
if(($cutleng%2==0)&&($notchinanum%2==1)) //如果要截取偶數個字元,所要截取長度范圍內的字元必須含偶數個非漢字,否則截取的長度加一
{
$cutleng++;
}
return substr($str,0,$cutleng);
}
?>
<html>
<head>
<script type="text/javascript">
function All(e, itemName)
{
var aa = document.getElementsByName(itemName);
for (var i=0; i<aa.length; i++)
aa[i].checked = e.checked; //得到那個總控的復選框的選中狀態
}
function Item(e, allName)
{
var all = document.getElementsByName(allName)[0];
if(!e.checked) all.checked = false;
else
{
var aa = document.getElementsByName(e.name);
for (var i=0; i<aa.length; i++)
if(!aa[i].checked) return;
all.checked = true;
}
}
</script>
</head>
<?php
include("conn.php");
if(isset($_POST['del']))
{
$mm = $_POST["selected"];
$id =implode(",",$mm);
$sql = "delete from forums where id in(".$id.")";
//echo $sql;
$result=mysql_query($sql);
echo $result?"刪除成功":"刪除失敗";
}
?>
<table style="BORDER-BOTTOM-WIDTH: 1px; BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=0 width=600 align=center border=1 bordercolor=#ddddff>
<tr align=middle>
<td height=40 bgColor=#DFFFDF colspan=3>論壇列表</td>
</tr>
<tr>
<td colspan=3><a href="login.php" style="float:right">[退出系統]</a><a href="add_forum.php" style="float:right">[添加論壇]</a></td>
<td></td>
</tr>
<tr align=middle>
<td height=40 bgColor=#DFFFDF width=80>狀態</td>
<td height=40 bgColor=#DFFFDF>論壇</td>
<td height=40 bgColor=#DFFFDF>最後更新</td>
</tr>
<?php
$sql="select * from forums";
$result=mysql_query($sql);
$num=mysql_num_rows($result);
if($num>0)
{
while($row=mysql_fetch_array($result)){
?>
<tr align=middle>
<td bgColor=#fffbec><input type="checkbox" name="selected" value="1"/></td>
<td height=50 bgColor=#fffbec width=300>
<?php
echo "<div><a href=\"forums.php?F=".$row['ID']."\">".$row['forum_name']."</a></div>";
echo cutstr($row['forum_description'],24);//最多顯示24個位元組,12個字,多餘部分用省略號代替
echo "……";
?>
</td>
<td height=50 bgColor=#fffbec><div><?php echo $row['last_post_time']."by".$row['last_post_author']?></div></td>
</tr>
<?php
}
}
else
{
echo "<tr bgColor=#fffbec><td colspan=3>對不起,論壇尚在創建中……</td></tr>";
}
?>
<tr>
<td colspan=3> <input type="checkbox" name="selected" value="1" onclick="All(this,'selected')"/>全選/不全選</td>
</tr>
<tr>
<td><input type="button" name="del" id="del" value="刪除選中項"/>
<?php
?>
</td>
</tr>
</table>
</html>
資料庫你就自己建,望採納~
⑸ 求寫個比較簡單的php登陸頁面代碼
主頁面:index.php <form name="form1" action="login.php" method="post" onsubmit="return check()"><!--這里注意onclick的用法-->
賬號:<input name="adminAccount" type="text" />
密碼:<input type="password" name="adminPass" />
輸入驗證碼:<input type="text" name="validate" />
< br />
<input type="submit" value="登陸" /><input type="reset" value="重置">
</form>判斷頁面:login.php<?php
//再連庫判斷賬號密碼
require_once("../inc/dbconfig.php");
$adminAccount=$_POST['adminAccount'];
$adminPass=md5($_POST['adminPass']);
$sql="select * from admin where adminAccount='$adminAccount' and adminPass='$adminPass'";
$result=mysql_query($sql) or die($sql);
$rows=mysql_num_rows($result);
if($rows==0){
?>
<script language="javascript">
alert("管理員賬號密碼錯誤!");
window.location="index.php";
</script>
<?
exit();
}
//將管理員賬號賦值給session
$_SESSION['adminAccount']=$adminAccount;
?>
<script language="javascript">
window.location="command.php";
</script>配置文件自己來就行了!