php用户cookie登录验证与mysql数据登录验证的方法:
<?php
unset($username);
if ($_COOKIE['login']) {
list($c_username,$cookie_hash) = split(',',$_COOKIE['login']);
if (md5($c_username.$secret_word) == $cookie_hash) {
$username = $c_username;
} else {
print "You have sent a bad cookie.";
}
}
if ($username) {
print "Welcome, $username.";
} else {
print "Welcome, anonymous user.";
}
看个完整的与数据库连接登录的代码:
<html> <head> <title>Log-In Page</title> </head> <body> Please enter your user details to log-in here... <form action = "authenticate.php" method = "post"> Username:<br> <input type = "text" name = "username"> <br><br> Password:<br> <input type = "text" name = "password"> <br><br> <input type = "submit" value = "Log In"> </form> </body> </html>
File:authenticate.php
class="brush:php;"><?php
$username = $_POST['username'];
$password = $_POST['password'];
$self = $_SERVER['PHP_SELF'];
$referer = $_SERVER['HTTP_REFERER'];
if( ( !$username ) or ( !$password ) )
{ header( "Location:$referer" ); exit(); }
$conn=@mysql_connect( "localhost", "userName", "password" ) or die( "Could not connect" );
$rs = @mysql_select_db( "my_database", $conn ) or die( "Could not select database" );
$sql = "select * from users where user_name="$username" and password = password( "$password" )";
$rs = mysql_query( $sql, $conn ) or die( "Could not execute query" );
$num = mysql_numrows( $rs );
if( $num != 0 )
{
$msg = "<h3 id="Welcome-nbsp-username-nbsp-nbsp-your-nbsp-log-in-nbsp-succeeded">Welcome $username - your log-in succeeded!</h3>";
}
else
{
header( "Location:$referer" ); exit();
}
<html>
<head>
<title>Log-In Authenticated</title>
</head>
<body>
<?php echo( $msg );
</body>
</html>
本文地址：
转载随意，但请附上文章地址:-)
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
SublimeText3 English version
Recommended: Win version, supports code prompts!
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
SublimeText3 Mac version
God-level code editing software (SublimeText3)
MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.
Atom editor mac version download
The most popular open source editor
