Bobcares

wesupport

CLIENT AREACall Us 1-800-383-5193
Bobcares

wesupport

Call Us 1-800-383-5193
Bobcares

wesupport

Call Us 1-800-383-5193

Need help?

Our experts have had an average response time of 13.52 minutes in October 2021 to fix urgent issues.

We will keep your servers stable, secure, and fast at all times for one fixed price.

DirectAdmin: Headers and client library minor version mismatch

by | Apr 6, 2021

Lately, one of our customers updated MySQL and rebuild PHP via custombuild. However, his website shows DirectAdmin: Headers and client library minor version mismatch.

As part of our Server Management Services, we assist our customers with several DirectAdmin queries.

Today, let us see how to solve this particular error.

 

DirectAdmin: Headers and client library minor version mismatch

Warning: mysql_connect()
[function.mysql-connect]: /Headers and client library minor version
mismatch/. /Headers:50157 Library:50511/

Here, PHP compiles with MySQL lower version, but it links a MySQL library of higher version family. This is the major cause of this error.

The root reason for this error is that PHP separates itself from the MySQL client libraries.

Hence, what happens (mainly on older compiles of Linux) is that people will compile PHP against a given build of the MySQL Client (an irrelevant version of MySQL) and not upgrade (in CentOS this package is mysqlclientXX).

In addition, this allows the package maintainer to support lower versions of MySQL.

Though a messy way to perform the task, it is the only way given how PHP and MySQL use different licensing.

In order to solve this, initially, we have to upgrade PHP to a version that complies with MySQL API library version or revert back mysql client libraries to API header version.

To do so, perform a cleanup in custombuild and rebuild PHP

# cd /usr/local/DirectAdmin/custombuild
# ./build clean
# ./build php

The MySQLND solves the problem with the help of PHP’s own native driver (the ND), which does not rely on the MySQL Client.

It also complies with the version of PHP we use. This is a better solution all around. If for no other reason MySQLND is made to have PHP talk to MySQL.

We can install mysqlnd using the command:

sudo yum install php-mysqlnd

[Failed to resolve the error? We’d be happy to assist]

 

Conclusion

In short, this error can occur even after MySQL update and PHP rebuild via custombuild. Today, we saw an effective method our Support Techs employ in order to solve this error.

PREVENT YOUR SERVER FROM CRASHING!

Never again lose customers to poor server speed! Let us help you.

Our server experts will monitor & maintain your server 24/7 so that it remains lightning fast and secure.

GET STARTED

var google_conversion_label = "owonCMyG5nEQ0aD71QM";

0 Comments

Submit a Comment

Your email address will not be published. Required fields are marked *