注册通常采用2种方法:1,先注册然后进入聊天;2,自动注册,然后在里面修改自己的资料!我采用第2种方法!!每个新进入的聊友的用户名会被自动保存到注册到数据库内,下次登陆必须输入准确的密码才能进入!
下面是判断部分!本程序使用文本数据库!
//$useronline为在线人的数据文件名称
//$useronlinelock为在线人的锁定标志
//$register为已经注册的数据文件名称
//$registerlock为注册文件的锁定标志
//$split为分隔符
//登陆参数 enter
if($action == "enter")
{
//当前时间秒数
$timecurrent = date("U");
//锁定在线人数文件,防止同时修改同一个文件
while( file_exists($useronlinelock))
{
if(!file_exists($useronlinelock))
{
break;
}
}
//创建临时文件
fclose(fopen($useronlinelock,"w"));
//读入在线用户和已经注册用户的信息:密码,昵称,更新时间
$useronline = file($useronline);
$register = file($register);
//用于判断登陆是否成功的标志
$namesign=0;
//判断用户名,密码的错误,用户名不允许为空,不允许超过10个字符,密码不允许超过20个字符
if(($name =="") || (strlen($name) > 10) || (strlen($pass) > 20) )
{
print("没有昵称或密码过长");
//登陆失败
$namesign=1;
//删除临时文件
unlink($useronlinelock);
}
else
{
//查找是否已经有人注册或者密码错误
$foundsign=0;
for($i=0;$i
//分割
$tempregister = split($split,$register[$i],99);
//找到已经注册的用户名
if( $name == $tempregister[0] )
{
//已经找到标志
$foundsign=1;
//密码正确吗
if($pass != $tempregister[1])
print("密码错了!");
//登陆失败
$namesign=1;
unlink($useronlinelock);
break;
}
else
{
//老用户登陆成功
$namesign=0;
break;
}
}
}
//如果没有找到这个用户名,那么就自动注册
if(!$foundsign)
{
//保存用户名和密码
$handle = fopen($register,"a");
fputs($handle,"$name$split$pass$splitrn");
fclose($handle);
//新用户登陆成功
$namesign=0;
}
}
}
if(!$namesign)
{
//更新在线人的名单
$useronlinehandle = fopen($useronline,"w");
//判断是否已经在里面,只是刷新页面
$updatesign = 0;
for($i=0;$i
$usertemp=split($split,chop($useronline[$i]),99);
if($name == $usertemp[0])
{
//更新标志
$updatesign = 1;
fputs($useronlinehandle,$useronline[$i]);
}
else
{
fputs($useronlinehandle,$useronline[$i]);
}
}
//如果没有在里面,则增加到里面
if(!$updatesign)
fputs($useronlinehandle,"$name$split$level$split$pass$split$timecurren
trn");
fclose($useronlinehandle);
//去掉缩定
unlink($useronlinelock);
//登陆成功
}
到这里,用户的验证已经完成,聊友已经合法的进入了聊天室,携带者呢称和密码
原作者:howtodo
来源:php2000.com

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PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

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PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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