Title: PHP Warning: mysql_connect() Last modified: February 9, 2017 --- # PHP Warning: mysql_connect() * Resolved [icarnr](https://wordpress.org/support/users/icarnr/) * (@icarnr) * [9 years, 3 months ago](https://wordpress.org/support/topic/php-warning-mysql_connect/) * Hi all, I have actived WP_DEBUG with LOG enabled in wp-content. Every operation inside my wordpress, have output this output in debag.log: * [09-Feb-2017 13:08:15 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/ wp-db.php on line 1559 [09-Feb-2017 13:08:18 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/wp-db.php on line 1559 [09-Feb-2017 13:10:19 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/wp-db.php on line 1559[ 09-Feb-2017 13:10:19 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/ wp-db.php on line 1559 [09-Feb-2017 13:10:54 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/wp-db.php on line 1559 [09-Feb-2017 13:12:12 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/wp-db.php on line 1559[ 09-Feb-2017 13:13:12 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/ wp-db.php on line 1559 [09-Feb-2017 13:14:04 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/wp-db.php on line 1559 [09-Feb-2017 13:14:13 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/wp-db.php on line 1559[ 09-Feb-2017 13:14:38 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/ wp-db.php on line 1559 [09-Feb-2017 13:14:42 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/wp-db.php on line 1559 [09-Feb-2017 13:14:42 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/wp-db.php on line 1559[ 09-Feb-2017 13:14:52 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/ wp-db.php on line 1559 [09-Feb-2017 13:15:07 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/wp-db.php on line 1559 [09-Feb-2017 13:15:22 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/wp-db.php on line 1559[ 09-Feb-2017 13:15:25 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/ wp-db.php on line 1559 [09-Feb-2017 13:15:28 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/wp-db.php on line 1559 [09-Feb-2017 13:16:14 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/wp-db.php on line 1559[ 09-Feb-2017 13:17:27 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/ wp-db.php on line 1559 [09-Feb-2017 13:17:38 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/wp-db.php on line 1559 [09-Feb-2017 13:17:42 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/wp-db.php on line 1559[ 09-Feb-2017 13:17:49 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/ wp-db.php on line 1559 [09-Feb-2017 13:18:15 UTC] PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50550 Library:50635 in /var/www/html/wp-includes/wp-db.php on line 1559 Viewing 7 replies - 1 through 7 (of 7 total) * Thread Starter [icarnr](https://wordpress.org/support/users/icarnr/) * (@icarnr) * [9 years, 3 months ago](https://wordpress.org/support/topic/php-warning-mysql_connect/#post-8785665) * O.S. CentOS Linux 3.10.0-514.6.1.el7.x86_64 #1 SMP Wed Jan 18 13:06:36 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux * WordPress Ver. 4.7.1 * SLQ Ver. mysql -V mysql Ver 14.14 Distrib 5.6.35, for Linux (x86_64) using EditLine wrapper * Thread Starter [icarnr](https://wordpress.org/support/users/icarnr/) * (@icarnr) * [9 years, 3 months ago](https://wordpress.org/support/topic/php-warning-mysql_connect/#post-8785678) * Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1608 Server version: 5.6.35 MySQL Community Server (GPL) * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved. * Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. * Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the current input statement. * mysql> * [Missy Oveson](https://wordpress.org/support/users/missybunnie/) * (@missybunnie) * [9 years, 3 months ago](https://wordpress.org/support/topic/php-warning-mysql_connect/#post-8785715) * What php version are you using? * Thread Starter [icarnr](https://wordpress.org/support/users/icarnr/) * (@icarnr) * [9 years, 3 months ago](https://wordpress.org/support/topic/php-warning-mysql_connect/#post-8785933) * php -v PHP 5.4.16 (cli) (built: Nov 6 2016 00:29:02) Copyright (c) 1997-2013 The PHP Group Zend Engine v2.4.0, Copyright (c) 1998-2013 Zend Technologies * Thread Starter [icarnr](https://wordpress.org/support/users/icarnr/) * (@icarnr) * [9 years, 3 months ago](https://wordpress.org/support/topic/php-warning-mysql_connect/#post-8785934) * php -v PHP 5.4.16 (cli) (built: Nov 6 2016 00:29:02) Copyright (c) 1997-2013 The PHP Group Zend Engine v2.4.0, Copyright (c) 1998-2013 Zend Technologies * Thread Starter [icarnr](https://wordpress.org/support/users/icarnr/) * (@icarnr) * [9 years, 3 months ago](https://wordpress.org/support/topic/php-warning-mysql_connect/#post-8786107) * # yum install php-mysqlnd Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mi.mirror.garr.it * epel: fr2.rpmfind.net * extras: mi.mirror.garr.it * updates: mi.mirror.garr.it Resolving Dependencies –> Running transaction check —> Package php-mysqlnd.x86_64 0:5.4.16-42.el7 will be installed– > Processing Conflict: php-mysql-5.4.16-42.el7.x86_64 conflicts php-mysqlnd – > Finished Dependency Resolution Error: php-mysql conflicts with php-mysqlnd- 5.4.16-42.el7.x86_64 You could try using –skip-broken to work around the problem You could try running: rpm -Va –nofiles –nodigest * Thread Starter [icarnr](https://wordpress.org/support/users/icarnr/) * (@icarnr) * [9 years, 3 months ago](https://wordpress.org/support/topic/php-warning-mysql_connect/#post-8797820) * risolto * yum install -y php71 php71-php-mysqlnd * yum install -y php71-php-devel php71-php-gd php71-php-json php71-php-mcrypt php71- php-mbstring php71-php-opcache php71-php-pear php71-php-pecl-apcu php71-php-pecl- geoip php71-php-pecl-imagick php71-php-pecl-json-post php71-php-pecl-memcache php71-php-pecl-xmldiff php71-php-pecl-zip php71-php-pspell php71-php-soap php71- php-tidy php71-php-xml php71-php-xmlrpc * scl enable php71 ‘php -v’ * yum install php71w php71w-common * yum-config-manager –enable remi-php71 Viewing 7 replies - 1 through 7 (of 7 total) The topic ‘PHP Warning: mysql_connect()’ is closed to new replies. ## Tags * [mysql_connect](https://wordpress.org/support/topic-tag/mysql_connect/) * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 7 replies * 2 participants * Last reply from: [icarnr](https://wordpress.org/support/users/icarnr/) * Last activity: [9 years, 3 months ago](https://wordpress.org/support/topic/php-warning-mysql_connect/#post-8797820) * Status: resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics