# CentOS 7 update from 6 and MySQL down

**URL:** <https://forums.percona.com/t/centos-7-update-from-6-and-mysql-down/3661>\
**Category:** Other MySQL® Questions\
**Created:** [August 6, 2014, 7:40am UTC](https://forums.percona.com/t/centos-7-update-from-6-and-mysql-down/3661 "2014-08-06T07:40:48Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![noa](https://avatars.discourse-cdn.com/v4/letter/n/919ad9/32.png) [@noa](https://forums.percona.com/u/noa)\
**Post date:** [August 6, 2014, 7:40am UTC](https://forums.percona.com/t/centos-7-update-from-6-and-mysql-down/3661/1 "2014-08-06T07:40:48Z")

</div>

[root@localhost modules]# php  
PHP Warning: PHP Startup: Unable to load dynamic library ‘/usr/lib64/php/modules/mysql.so’ - /usr/lib64/php/modules/mysql.so: symbol mysql\_fetch\_row, version libmysqlclient\_18 not defined in file libmysqlclient.so.18 with link time reference in Unknown on line 0  
PHP Warning: PHP Startup: Unable to load dynamic library ‘/usr/lib64/php/modules/mysqli.so’ - /usr/lib64/php/modules/mysqli.so: symbol client\_errors, version libmysqlclient\_18 not defined in file libmysqlclient.so.18 with link time reference in Unknown on line 0  
PHP Warning: PHP Startup: Unable to load dynamic library ‘/usr/lib64/php/modules/pdo\_mysql.so’ - /usr/lib64/php/modules/pdo\_mysql.so: symbol mysql\_options, version libmysqlclient\_18 not defined in file libmysqlclient.so.18 with link time reference in Unknown on line 0  
PHP Warning: PHP Startup: Unable to load dynamic library ‘/usr/lib64/php/modules/memcached.so’ - libsasl2.so.2: cannot open shared object file: No such file or directory in Unknown on line 0

I upgrade PHP 5.5 and solved problem.