我的服务器是Centos 5
我从Webtatic做了以下指示：https://webtatic.com/packages/php55/
CentOS / RHEL 5.x：
rpm -Uvh http://mirror.webtatic.com/yum/el5/latest.rpm
但是当运行此命令为我当前的php55w安装php55w-mysql ext时，它显示了这个日志：
[root@centos ~]# yum install php55w-mysql --enablerepo=webtatic
Loaded plugins: fastestmirror, replace
Loading mirror speeds from cached hostfile
* addons: centos-hn.viettelidc.com.vn
* base: mirror.digistar.vn
* extras: centos-hn.viettelidc.com.vn
* update: centos-hn.viettelidc.com.vn
* webtatic: us-east.repo.webtatic.com
Setting up Install Process
No package php55w-mysql available.
Nothing to do
然后我尝试从webtatic repo列出可用的包：
[root@centos ~]# yum --enablerepo=webtatic list | grep php
php55w.x86_64 5.5.11-1.w5 installed
php55w-cli.x86_64 5.5.11-1.w5 installed
php55w-common.x86_64 5.5.11-1.w5 installed
php55w-devel.x86_64 5.5.11-1.w5 installed
php55w-gd.x86_64 5.5.11-1.w5 installed
php55w-mbstring.x86_64 5.5.11-1.w5 installed
php55w-mcrypt.x86_64 5.5.11-1.w5 installed
php55w-pdo.x86_64 5.5.11-1.w5 installed
php55w-process.x86_64 5.5.11-1.w5 installed
php55w-pspell.x86_64 5.5.11-1.w5 installed
php55w-xml.x86_64 5.5.11-1.w5 installed
graphviz-php.x86_64 2.12-8.el5.centos extras
php.x86_64 5.3.28-4.w5 webtatic
php-bcmath.x86_64 5.3.28-4.w5 webtatic
php-cli.x86_64 5.3.28-4.w5 webtatic
php-common.x86_64 5.3.28-4.w5 webtatic
php-dba.x86_64 5.3.28-4.w5 webtatic
php-dbase.x86_64 5.1.6-15.el5.centos.1 extras
php-devel.x86_64 5.3.28-4.w5 webtatic
php-eaccelerator.x86_64 1:0.9.6.1-1.1.w5 webtatic
php-embedded.x86_64 5.3.28-4.w5 webtatic
php-fpm.x86_64 5.3.28-4.w5 webtatic
php-gd.x86_64 5.3.28-4.w5 webtatic
php-imap.x86_64 5.3.28-4.w5 webtatic
php-intl.x86_64 5.3.28-4.w5 webtatic
php-ldap.x86_64 5.3.28-4.w5 webtatic
php-mbstring.x86_64 5.3.28-4.w5 webtatic
php-mcrypt.x86_64 5.3.28-4.w5 webtatic
php-mhash.x86_64 5.2.17-1.1.w5 webtatic
php-mssql.x86_64 5.3.28-4.w5 webtatic
php-mysql.x86_64 5.3.28-4.w5 webtatic
php-ncurses.x86_64 5.2.17-1.1.w5 webtatic
php-odbc.x86_64 5.3.28-4.w5 webtatic
php-pdo.x86_64 5.3.28-4.w5 webtatic
php-pear.noarch 1:1.9.4-1.w5 webtatic
php-pear-Auth-SASL.noarch 1.0.2-4.el5.centos extras
php-pear-DB.noarch 1.7.13-1.el5.centos extras
php-pear-Date.noarch 1.4.7-2.el5.centos extras
php-pear-File.noarch 1.2.2-1.el5.centos extras
php-pear-HTTP-Request.noarch 1.4.2-1.el5.centos extras
php-pear-Log.noarch 1.9.13-1.el5.centos extras
php-pear-MDB2.noarch 2.4.1-2.el5.centos extras
php-pear-MDB2-Driver-mysql.noarch 1.4.1-3.el5.centos extras
php-pear-Mail.noarch 1.1.14-1.el5.centos extras
php-pear-Mail-Mime.noarch 1.4.0-1.el5.centos extras
php-pear-Net-SMTP.noarch 1.2.10-1.el5.centos extras
php-pear-Net-Sieve.noarch 1.1.5-2.el5.centos extras
php-pear-Net-Socket.noarch 1.0.8-1.el5.centos extras
php-pear-Net-URL.noarch 1.0.15-1.el5.centos extras
php-pecl-Fileinfo.x86_64 1.0.4-3.el5.centos extras
php-pecl-apc.x86_64 3.1.9-1.2.w5 webtatic
php-pecl-gearman.x86_64 0.7.0-1.w5 webtatic
php-pecl-memcache.x86_64 3.0.7-1.w5 webtatic
php-pecl-xdebug.x86_64 2.1.0-1.w5 webtatic
php-pgsql.x86_64 5.3.28-4.w5 webtatic
php-process.x86_64 5.3.28-4.w5 webtatic
php-pspell.x86_64 5.3.28-4.w5 webtatic
php-readline.x86_64 5.1.6-15.el5.centos.1 extras
php-recode.x86_64 5.3.28-4.w5 webtatic
php-snmp.x86_64 5.3.28-4.w5 webtatic
php-soap.x86_64 5.3.28-4.w5 webtatic
php-suhosin.x86_64 0.9.32.1-1.w5 webtatic
php-tidy.x86_64 5.3.28-4.w5 webtatic
php-xhp.x86_64 1.3.9-1.w5 webtatic
php-xml.x86_64 5.3.28-4.w5 webtatic
php-xmlrpc.x86_64 5.3.28-4.w5 webtatic
php-zts.x86_64 5.3.28-4.w5 webtatic
php53.x86_64 5.3.3-22.el5_10 update
php53-bcmath.x86_64 5.3.3-22.el5_10 update
php53-cli.x86_64 5.3.3-22.el5_10 update
php53-common.x86_64 5.3.3-22.el5_10 update
php53-dba.x86_64 5.3.3-22.el5_10 update
php53-devel.x86_64 5.3.3-22.el5_10 update
php53-gd.x86_64 5.3.3-22.el5_10 update
php53-imap.x86_64 5.3.3-22.el5_10 update
php53-intl.x86_64 5.3.3-22.el5_10 update
php53-ldap.x86_64 5.3.3-22.el5_10 update
php53-mbstring.x86_64 5.3.3-22.el5_10 update
php53-mysql.x86_64 5.3.3-22.el5_10 update
php53-odbc.x86_64 5.3.3-22.el5_10 update
php53-odbc64.x86_64 5.3.3-2.el5 base
php53-pdo.x86_64 5.3.3-22.el5_10 update
php53-pgsql.x86_64 5.3.3-22.el5_10 update
php53-process.x86_64 5.3.3-22.el5_10 update
php53-pspell.x86_64 5.3.3-22.el5_10 update
php53-snmp.x86_64 5.3.3-22.el5_10 update
php53-soap.x86_64 5.3.3-22.el5_10 update
php53-xml.x86_64 5.3.3-22.el5_10 update
php53-xmlrpc.x86_64 5.3.3-22.el5_10 update
结果未列出php55w-mysql !!!
更新：解决方案
首先删除旧的webtatic包，使用命令：
rpm -e webtatic5-release-5.1-3.noarch
然后重新安装，
yum --enablerepo=webtatic-el5 list | grep php
将显示php55w软件包的完整列表
[root@centos ~]# yum --enablerepo=webtatic-el5 list | grep php
php55w.x86_64 5.5.14-1.w5 installed
php55w-cli.x86_64 5.5.14-1.w5 installed
php55w-common.x86_64 5.5.14-1.w5 installed
php55w-devel.x86_64 5.5.14-1.w5 installed
php55w-gd.x86_64 5.5.14-1.w5 installed
php55w-mbstring.x86_64 5.5.14-1.w5 installed
php55w-mcrypt.x86_64 5.5.14-1.w5 installed
php55w-mysql.x86_64 5.5.14-1.w5 installed
php55w-pdo.x86_64 5.5.14-1.w5 installed
php55w-process.x86_64 5.5.14-1.w5 installed
php55w-pspell.x86_64 5.5.14-1.w5 installed
php55w-xml.x86_64 5.5.14-1.w5 installed
graphviz-php.x86_64 2.12-8.el5.centos extras
php.x86_64 5.1.6-44.el5_10 update
php-bcmath.x86_64 5.1.6-44.el5_10 update
php-cli.x86_64 5.1.6-44.el5_10 update
php-common.x86_64 5.1.6-44.el5_10 update
php-dba.x86_64 5.1.6-44.el5_10 update
php-dbase.x86_64 5.1.6-15.el5.centos.1 extras
php-devel.x86_64 5.1.6-44.el5_10 update
php-gd.x86_64 5.1.6-44.el5_10 update
php-imap.x86_64 5.1.6-44.el5_10 update
php-ldap.x86_64 5.1.6-44.el5_10 update
php-mbstring.x86_64 5.1.6-44.el5_10 update
php-mcrypt.x86_64 5.1.6-15.el5.centos.1 extras
php-mhash.x86_64 5.1.6-15.el5.centos.1 extras
php-mssql.x86_64 5.1.6-15.el5.centos.1 extras
php-mysql.x86_64 5.1.6-44.el5_10 update
php-ncurses.x86_64 5.1.6-44.el5_10 update
php-odbc.x86_64 5.1.6-44.el5_10 update
php-pdo.x86_64 5.1.6-44.el5_10 update
php-pear.noarch 1:1.4.9-8.el5 base
php-pear-Auth-SASL.noarch 1.0.2-4.el5.centos extras
php-pear-DB.noarch 1.7.13-1.el5.centos extras
php-pear-Date.noarch 1.4.7-2.el5.centos extras
php-pear-File.noarch 1.2.2-1.el5.centos extras
php-pear-HTTP-Request.noarch 1.4.2-1.el5.centos extras
php-pear-Log.noarch 1.9.13-1.el5.centos extras
php-pear-MDB2.noarch 2.4.1-2.el5.centos extras
php-pear-MDB2-Driver-mysql.noarch 1.4.1-3.el5.centos extras
php-pear-Mail.noarch 1.1.14-1.el5.centos extras
php-pear-Mail-Mime.noarch 1.4.0-1.el5.centos extras
php-pear-Net-SMTP.noarch 1.2.10-1.el5.centos extras
php-pear-Net-Sieve.noarch 1.1.5-2.el5.centos extras
php-pear-Net-Socket.noarch 1.0.8-1.el5.centos extras
php-pear-Net-URL.noarch 1.0.15-1.el5.centos extras
php-pecl-Fileinfo.x86_64 1.0.4-3.el5.centos extras
php-pecl-memcache.x86_64 2.2.3-1.el5_2 extras
php-pgsql.x86_64 5.1.6-44.el5_10 update
php-readline.x86_64 5.1.6-15.el5.centos.1 extras
php-snmp.x86_64 5.1.6-44.el5_10 update
php-soap.x86_64 5.1.6-44.el5_10 update
php-tidy.x86_64 5.1.6-15.el5.centos.1 extras
php-xml.x86_64 5.1.6-44.el5_10 update
php-xmlrpc.x86_64 5.1.6-44.el5_10 update
php53.x86_64 5.3.3-22.el5_10 update
php53-bcmath.x86_64 5.3.3-22.el5_10 update
php53-cli.x86_64 5.3.3-22.el5_10 update
php53-common.x86_64 5.3.3-22.el5_10 update
php53-dba.x86_64 5.3.3-22.el5_10 update
php53-devel.x86_64 5.3.3-22.el5_10 update
php53-gd.x86_64 5.3.3-22.el5_10 update
php53-imap.x86_64 5.3.3-22.el5_10 update
php53-intl.x86_64 5.3.3-22.el5_10 update
php53-ldap.x86_64 5.3.3-22.el5_10 update
php53-mbstring.x86_64 5.3.3-22.el5_10 update
php53-mysql.x86_64 5.3.3-22.el5_10 update
php53-odbc.x86_64 5.3.3-22.el5_10 update
php53-odbc64.x86_64 5.3.3-2.el5 base
php53-pdo.x86_64 5.3.3-22.el5_10 update
php53-pgsql.x86_64 5.3.3-22.el5_10 update
php53-process.x86_64 5.3.3-22.el5_10 update
php53-pspell.x86_64 5.3.3-22.el5_10 update
php53-snmp.x86_64 5.3.3-22.el5_10 update
php53-soap.x86_64 5.3.3-22.el5_10 update
php53-xml.x86_64 5.3.3-22.el5_10 update
php53-xmlrpc.x86_64 5.3.3-22.el5_10 update
php54w.x86_64 5.4.30-1.w5 webtatic-el5
php54w-bcmath.x86_64 5.4.30-1.w5 webtatic-el5
php54w-cli.x86_64 5.4.30-1.w5 webtatic-el5
php54w-common.x86_64 5.4.30-1.w5 webtatic-el5
php54w-dba.x86_64 5.4.30-1.w5 webtatic-el5
php54w-devel.x86_64 5.4.30-1.w5 webtatic-el5
php54w-embedded.x86_64 5.4.30-1.w5 webtatic-el5
php54w-enchant.x86_64 5.4.30-1.w5 webtatic-el5
php54w-fpm.x86_64 5.4.30-1.w5 webtatic-el5
php54w-gd.x86_64 5.4.30-1.w5 webtatic-el5
php54w-imap.x86_64 5.4.30-1.w5 webtatic-el5
php54w-interbase.x86_64 5.4.30-1.w5 webtatic-el5
php54w-intl.x86_64 5.4.30-1.w5 webtatic-el5
php54w-ldap.x86_64 5.4.30-1.w5 webtatic-el5
php54w-mbstring.x86_64 5.4.30-1.w5 webtatic-el5
php54w-mcrypt.x86_64 5.4.30-1.w5 webtatic-el5
php54w-mssql.x86_64 5.4.30-1.w5 webtatic-el5
php54w-mysql.x86_64 5.4.30-1.w5 webtatic-el5
php54w-mysqlnd.x86_64 5.4.30-1.w5 webtatic-el5
php54w-odbc.x86_64 5.4.30-1.w5 webtatic-el5
php54w-pdo.x86_64 5.4.30-1.w5 webtatic-el5
php54w-pear.noarch 1:1.9.4-7.w5 webtatic-el5
php54w-pecl-apc.x86_64 3.1.13-3.w5 webtatic-el5
php54w-pecl-apcu.x86_64 4.0.6-1.w5 webtatic-el5
php54w-pecl-apcu-devel.x86_64 4.0.6-1.w5 webtatic-el5
php54w-pecl-gearman.x86_64 1.1.2-1.w5 webtatic-el5
php54w-pecl-memcache.x86_64 3.0.8-2.w5 webtatic-el5
php54w-pecl-xdebug.x86_64 2.2.5-1.w5 webtatic-el5
php54w-pecl-zendopcache.x86_64 7.0.3-1.w5 webtatic-el5
php54w-pgsql.x86_64 5.4.30-1.w5 webtatic-el5
php54w-process.x86_64 5.4.30-1.w5 webtatic-el5
php54w-pspell.x86_64 5.4.30-1.w5 webtatic-el5
php54w-recode.x86_64 5.4.30-1.w5 webtatic-el5
php54w-snmp.x86_64 5.4.30-1.w5 webtatic-el5
php54w-soap.x86_64 5.4.30-1.w5 webtatic-el5
php54w-tidy.x86_64 5.4.30-1.w5 webtatic-el5
php54w-xml.x86_64 5.4.30-1.w5 webtatic-el5
php54w-xmlrpc.x86_64 5.4.30-1.w5 webtatic-el5
php55w-bcmath.x86_64 5.5.14-1.w5 webtatic-el5
php55w-dba.x86_64 5.5.14-1.w5 webtatic-el5
php55w-embedded.x86_64 5.5.14-1.w5 webtatic-el5
php55w-enchant.x86_64 5.5.14-1.w5 webtatic-el5
php55w-fpm.x86_64 5.5.14-1.w5 webtatic-el5
php55w-imap.x86_64 5.5.14-1.w5 webtatic-el5
php55w-interbase.x86_64 5.5.14-1.w5 webtatic-el5
php55w-intl.x86_64 5.5.14-1.w5 webtatic-el5
php55w-ldap.x86_64 5.5.14-1.w5 webtatic-el5
php55w-mssql.x86_64 5.5.14-1.w5 webtatic-el5
php55w-mysqlnd.x86_64 5.5.14-1.w5 webtatic-el5
php55w-odbc.x86_64 5.5.14-1.w5 webtatic-el5
php55w-opcache.x86_64 5.5.14-1.w5 webtatic-el5
php55w-pear.noarch 1:1.9.4-7.w5 webtatic-el5
php55w-pecl-apcu.x86_64 4.0.6-1.w5 webtatic-el5
php55w-pecl-apcu-devel.x86_64 4.0.6-1.w5 webtatic-el5
php55w-pecl-gearman.x86_64 1.1.2-1.w5 webtatic-el5
php55w-pecl-memcache.x86_64 3.0.8-2.w5 webtatic-el5
php55w-pecl-xdebug.x86_64 2.2.5-1.w5 webtatic-el5
php55w-pgsql.x86_64 5.5.14-1.w5 webtatic-el5
php55w-recode.x86_64 5.5.14-1.w5 webtatic-el5
php55w-snmp.x86_64 5.5.14-1.w5 webtatic-el5
php55w-soap.x86_64 5.5.14-1.w5 webtatic-el5
php55w-tidy.x86_64 5.5.14-1.w5 webtatic-el5
php55w-xmlrpc.x86_64 5.5.14-1.w5 webtatic-el5