ldap_compare

(PHP 4 >= 4.0.2, PHP 5, PHP 7, PHP 8)

ldap_compare — Compare value of attribute found in entry specified with DN

说明

ldap_compare(
    LDAP\Connection $ldap,
    string $dn,
    string $attribute,
    string $value,
    ?array $controls = null
): bool|int

Compare value of attribute with value of same attribute in an LDAP directory entry.

参数

ldap: 通过 ldap_connect() 返回的 LDAP\Connection 实例。
dn: The distinguished name of an LDAP entity.
attribute: The attribute name.
value: The compared value.
controls: Array of LDAP Controls to send with the request.

返回值

Returns true if value matches otherwise returns false. Returns -1 on error.

更新日志

版本	说明
8.1.0	现在 `ldap` 参数接受 LDAP\Connection 实例，之前接受资源(resource)。
8.0.0	`controls` is nullable now; previously, it defaulted to `[]`.
7.3	Support for `controls` added

范例

The following example demonstrates how to check whether or not given password matches the one defined in DN specified entry.

示例 #1 Complete example of password check


<?php

$ds=ldap_connect("localhost");  // assuming the LDAP server is on this host

if ($ds) {

    // bind
    if (ldap_bind($ds)) {

        // prepare data
        $dn = "cn=Matti Meikku, ou=My Unit, o=My Company, c=FI";
        $value = "secretpassword";
        $attr = "password";

        // compare value
        $r=ldap_compare($ds, $dn, $attr, $value);

        if ($r === -1) {
            echo "Error: " . ldap_error($ds);
        } elseif ($r === true) {
            echo "Password correct.";
        } elseif ($r === false) {
            echo "Wrong guess! Password incorrect.";
        }

    } else {
        echo "Unable to bind to LDAP server.";
    }

    ldap_close($ds);

} else {
    echo "Unable to connect to LDAP server.";
}
?>

注释

警告

ldap_compare() can NOT be used to compare BINARY values!

add a note

User Contributed Notes 4 notes

down

chuck+ldap at 2006 dot snew dot com ¶

17 years ago


Just a side note that this is not how you'd ever AUTHENTICATE someone, just an example code.

The common way to authenticate is to get the users name, use search and perhaps selection to the user to get her DN (single value) then attempt to BIND to the ldapserver using that dn and the offered password.  If it works, then it's the right password.

Note that the password offered MUST NOT BE EMPTY or many LDAPs will presume you meant to authenticate anonymously and it will succeed, leaving you thinking it's the right password.

down

oudejans at zeelandnet dot nl ¶

17 years ago


With PHP 4.3.* is Password no longer a valid attribute.. try to use userPassword

down

Brian Kerhin <kerhin at bigfoot dot com> ¶

21 years ago


Not probably, will.  With PHP 4.0.4 and openldap 1.2.9 this little script, even with the correct attributes for the password does not do the job.  Would superb if it did!

down

-1

334647 at swin dot edu dot au ¶

21 years ago


Interesting example. Apart from the fact that very few people would allow comaprisions of the password attribute for security reasons. The attribute name of "password" does not match the usual schemas.


The usual method of user id + password verification is to attempt to bind using the supplied credentials.


Ldap compare on password values will probably fail with ns directroy server and openldap v2+ becuase of server support for password hashing.

add a note

官方地址：https://www.php.net/manual/en/function.ldap-compare.php

有任何技术问题请点击这里网站运营推广招聘

IT PHP 编程语言 Linux 开发编程科技 Elasticsearch HTML/CSS/XML 网络 JAVA NoSQL 数据库面试 C/C++ Golang Git 算法操作系统正则表达式 Redis 互联网 MySql JavaScript 运维软件国际架构设计 Mac OS TCP/IP Excel Vim Windows Socket Oracle VR MongoDB Python 运营 MemCache 商业硬件电子娱乐设计 nginx 摄影游戏 WordPress HTTP 团建数码电器

php7 安装fileinfo扩展 preg_split — 通过一个正则表达式分隔字符串 php位值,解决 PHP 中 usort 在值相同时改变原始位置的问题 [PHP] inet_pton/inet_ntop IP地址转换函数 array_multisort() 多字段排序 PHPMailer设置utf8 PHPMailer字符集CharSet ADORecordSet对象 adodb手册 PHP 8.1 [鸟哥]PHP_INT_MIN 和 -9223372036854775808 opcache预加载 Composer的Packagist资源 mysql面试题 [鸟哥]PHP FFI详解 - 一种全新的PHP扩展方式 PHP7添加redis扩展 Packagist / Composer 中国全量镜像 PHP获取指定函数定义在哪个文件中及行号 PHP mkdir()写出来的权限与mode值不符合 adodb连接mysql多个数据库的问题 PHPstorm 里面Terminal 不能使用 esc键吗退出编辑模式吗

略微加速

PHP官方手册 - 互联网笔记

ldap_compare

说明

参数

返回值

更新日志

范例

注释

User Contributed Notes 4 notes