PHP LDAP登录问题 [英] PHP LDAP Login Issue

问题描述

我的PHP LDAP登录有点麻烦.我的第一个绑定成功，但是即使凭据正确，我的第二个绑定也不成功.我尝试使用在第一个绑定中用于第二个绑定的凭据来确保它能正常工作，并确保它可以在第一个绑定中绑定它.为什么我第二次无法绑定?

I am having a little trouble with my PHP LDAP login. My first bind is successful, but my second bind is not even if the credentials are correct. I tried using the credentials I use to the second bind in the first one to make sure it worked, and sure enough it can bind it at the first one. Why am I not being able to bind the second time?

<?php
// Define $myusername and $mypassword
$username=$_POST['username'];
$password=$_POST['password'];

// using ldap bind
$ldaprdn  = 'uid=MYUID,ou=special,ou=people,o=myo.com,dc=mydc,dc=com';     // ldap rdn or dn
$ldappass = 'PASSWORD';  // associated password

// connect to ldap server
$ldapconn = ldap_connect("ldaps://MYLDAPSERVER", ###)
    or die("Could not connect to LDAP server.");

if ($ldapconn) 
{
    // binding to ldap server
    $ldapbind = ldap_bind($ldapconn, $ldaprdn, $ldappass);

    // verify binding
    if ($ldapbind) 
    {
        $result = ldap_search($ldapconn, "ou=people,o=myo.com,dc=mydc,dc=com", "uid=$username");
        $info = ldap_get_entries($ldapconn, $result);
        $userdn = $info[0]["dn"];
        $count = $info["count"]; 
        ldap_unbind($ldapconn);

        if ($count == 1)
        {
            $ldapbinduser = ldap_bind($ldapconn, $userdn, $password);
            if ($ldapbinduser) 
            {
                echo "Sucess you made it all the way<br />";
            }
            else
            {
                echo "Invalid Login Details, please try again(1001)";
            }
        }
        else
        {
            echo "Invalid Login Details, please try again(1002)";
        }
    } 
    else 
    {
        echo "LDAP bind failed(1000)";
    }
}

推荐答案

尽管其名称可能暗示了不同的含义，但 实际上会杀死连接句柄，以便在取消绑定后该连接不再可用.从代码中删除ldap_unbind()调用，一切都会按预期进行.

Although its name might implicate something different, ldap_unbind() actually kills the connection handle so that the connection is not usable any more after an unbind. Remove the ldap_unbind() call from your code and everything should work as expected.

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