我现在已经尝试在 2 小时内安装 PHP PDO，但没有成功，并且我到处搜索解决方案 - 但没有任何成功。
yum install php-pdo
不起作用，而且我在 php.ini 中找不到扩展名 = PDO。
已尝试更新
yum update
并清理它，没有任何效果。该怎么办？
我有 CentOS 6.4 版本（最终版）
-bash-4.1# rpm -e rpmfusion-free-release rpmfusion-nonfree-release
-bash-4.1# yum install php-pdo
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.checkdomain.de
* epel: mirrors.n-ix.net
* extras: mirror.checkdomain.de
* rpmforge: mirror.jgotteswinter.com
* updates: mirror.checkdomain.de
Setting up Install Process
No package php-pdo available.
Error: Nothing to do
-bash-4.1# yum clean
Loaded plugins: fastestmirror
Error: clean requires an option: headers, packages, metadata, dbcache, plugins, expire- cache, rpmdb, all
-bash-4.1# yum update
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.checkdomain.de
* epel: mirrors.n-ix.net
* extras: mirror.checkdomain.de
* rpmforge: mirror.jgotteswinter.com
* updates: mirror.checkdomain.de
Setting up Update Process
No Packages marked for Update
-bash-4.1# yum install php-pdo
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.checkdomain.de
* epel: mirrors.n-ix.net
* extras: mirror.checkdomain.de
* rpmforge: mirror.jgotteswinter.com
* updates: mirror.checkdomain.de
Setting up Install Process
No package php-pdo available.
Error: Nothing to do
-bash-4.1# su -c 'yum localinstall --nogpgcheck http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release- $(rpm -E %fedora).noarch.rpm'
Loaded plugins: fastestmirror
Setting up Local Package Process
Cannot open: http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release- %fedora.noarch.rpm. Skipping.
Cannot open: http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release- %fedora.noarch.rpm. Skipping.
Nothing to do
-bash-4.1# su -c 'rpm -Uvh http://download1.rpmfusion.org/free/el/updates/5/i386/rpmfusion- free-release-5-1.noarch.rpm ttp://download1.rpmfusion.org/nonfree/el/updates/5/i386/rpmfusion-nonfree-release-5- 1.noarch.rpm'
Retrieving http://download1.rpmfusion.org/free/el/updates/5/i386/rpmfusion-free-release-5-1.noarch.rpm
warning: /var/tmp/rpm-tmp.d5nTQs: Header V3 DSA/SHA1 Signature, key ID e74f0522: NOKEY
error: open of ttp://download1.rpmfusion.org/nonfree/el/updates/5/i386/rpmfusion-nonfree- release-5-1.noarch.rpm failed: No such file or directory
-bash-4.1# su -c 'yum localinstall --nogpgcheck http://download1.rpmfusion.org/free/el/updates/6/i386/rpmfusion-free-release-6-1.noarch.rpm http://download1.rpmfusion.org/nonfree/el/updates/6/i386/rpmfusion-nonfree-release-6- 1.noarch.rpm'
Loaded plugins: fastestmirror
Setting up Local Package Process
rpmfusion-free-release-6-1.noarch.rpm | 5.9 kB 00:00
Examining /var/tmp/yum-root-ch9z50/rpmfusion-free-release-6-1.noarch.rpm: rpmfusion- free-release-6-1.noarch
Marking /var/tmp/yum-root-ch9z50/rpmfusion-free-release-6-1.noarch.rpm to be installed
Loading mirror speeds from cached hostfile
* base: mirror.checkdomain.de
* epel: mirrors.n-ix.net
* extras: mirror.checkdomain.de
* rpmforge: mirror.jgotteswinter.com
* updates: mirror.checkdomain.de
rpmfusion-nonfree-release-6-1.noarch.rpm | 6.0 kB 00:00
Examining /var/tmp/yum-root-ch9z50/rpmfusion-nonfree-release-6-1.noarch.rpm: rpmfusion-nonfree-release-6-1.noarch
Marking /var/tmp/yum-root-ch9z50/rpmfusion-nonfree-release-6-1.noarch.rpm to be installed
Resolving Dependencies
--> Running transaction check
---> Package rpmfusion-free-release.noarch 0:6-1 will be installed
---> Package rpmfusion-nonfree-release.noarch 0:6-1 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version
Repository Size
================================================================================
Installing:
rpmfusion-free-release noarch 6-1 /rpmfusion-free-release-6-1.noarch 3.7 k
rpmfusion-nonfree-release
noarch 6-1 /rpmfusion-nonfree-release-6-1.noarch 3.8 k
Transaction Summary
================================================================================
Install 2 Package(s)
Total size: 7.5 k
Installed size: 7.5 k
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : rpmfusion-free-release-6-1.noarch 1/2
Installing : rpmfusion-nonfree-release-6-1.noarch 2/2
Verifying : rpmfusion-nonfree-release-6-1.noarch 1/2
Verifying : rpmfusion-free-release-6-1.noarch 2/2
Installed:
rpmfusion-free-release.noarch 0:6-1 rpmfusion-nonfree-release.noarch 0:6-1
Complete!
-bash-4.1# yum updateLoaded plugins: fastestmirrorLoading mirror speeds from cached hostfile * base: mirror.checkdomain.de
* epel: mirrors.n-ix.net
* extras: mirror.checkdomain.de
* rpmforge: mirror.jgotteswinter.com
* rpmfusion-free-updates: ftp-stud.hs-esslingen.de
* rpmfusion-nonfree-updates: ftp-stud.hs-esslingen.de
* updates: mirror.checkdomain.de
rpmfusion-free-updates | 2.7 kB 00:00
rpmfusion-free-updates/primary_db | 247 kB 00:00
rpmfusion-nonfree-updates | 2.2 kB 00:00
rpmfusion-nonfree-updates/primary_db | 46 kB 00:00
Setting up Update Process
No Packages marked for Update
-bash-4.1# yum install php-pdoLoaded plugins: fastestmirrorLoading mirror speeds from cached hostfile * base: mirror.checkdomain.de
* epel: mirrors.n-ix.net
* extras: mirror.checkdomain.de
* rpmforge: mirror.jgotteswinter.com
* rpmfusion-free-updates: ftp-stud.hs-esslingen.de
* rpmfusion-nonfree-updates: ftp-stud.hs-esslingen.de
* updates: mirror.checkdomain.de
Setting up Install Process
No package php-pdo available.
E rror: Nothing to do
-bash-4.1# /etc/yum.conf
-bash: /etc/yum.conf: Permission denied
-bash-4.1#
答案1
您似乎已为 Fedora 而非 Enterprise Linux 安装了 RPM Fusion 存储库。这些存储库与您的 CentOS 系统不兼容，因此会导致此错误。
要解决该问题，请删除 repos（例如rpm -e rpmfusion-free-release rpmfusion-nonfree-release）和用正确的存储库替换它们。
然后，检查您的/etc/yum.conf文件并删除任何不适当的exclude内容。
（错误 503 是暂时的故障，当上游修复其网站时它将自行解决。您现在可以忽略它。）
答案2
您的服务器是否位于代理或防火墙后面？尝试获取时出现 503 错误：
https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=x86_64
表明你的服务器无法下载镜像列表。
由于无法获取镜像列表，它将无法找到所需的 RPM。
您可能想看看是否可以使用 curl 获取该 URL：
curl "https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=x86_64"
如果您可以删除添加的存储库以恢复标准配置。