刚开始用LINUX没什么经验，CentOS 6.5自带PHP5，当时不会删就留着了，然后安装了PHP7. 现在查看php -v结果显示的是PHP 5.6. 怎么让系统默认使用PHP7呢？

刚刚把PHP全删了“yum remove php*”，然后用YUM安装了PHP7，现在php -v显示是PHP 7了。

但是运行php-fpm的时候提示找不到文件。我又用yum --enablerepo=remi install php php-fpm 安装了一下php-fpm，执行后提示：

yum install php php-fpm php-mysql
Failed to set locale, defaulting to C
Loaded plugins: refresh-packagekit, security
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package php.x86_64 0:5.3.3-48.el6_8 will be installed
--> Processing Dependency: php-common(x86-64) = 5.3.3-48.el6_8 for package: php-5.3.3-48.el6_8.x86_64
--> Processing Dependency: php-cli(x86-64) = 5.3.3-48.el6_8 for package: php-5.3.3-48.el6_8.x86_64
---> Package php-fpm.x86_64 0:5.3.3-48.el6_8 will be installed
---> Package php-mysql.x86_64 0:5.3.3-48.el6_8 will be installed
--> Running transaction check
---> Package php-cli.x86_64 0:5.3.3-48.el6_8 will be installed
---> Package php-common.x86_64 0:5.3.3-48.el6_8 will be installed
--> Processing Conflict: php70w-common-7.0.15-1.w6.x86_64 conflicts php-common < 7.0
--> Finished Dependency Resolution
Error: php70w-common conflicts with php-common-5.3.3-48.el6_8.x86_64
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest

运行php-fpm依然提示“-bash: /usr/sbin/php-fpm: No such file or directory”

再试这个安装：
yum install php70-php-fpm.x86_64

Failed to set locale, defaulting to C
Loaded plugins: refresh-packagekit, security
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package php70-php-fpm.x86_64 0:7.0.15-1.el6.remi will be installed
--> Processing Dependency: php70-php-common(x86-64) = 7.0.15-1.el6.remi for package: php70-php-fpm-7.0.15-1.el6.remi.x86_64
--> Running transaction check
---> Package php70-php-common.x86_64 0:7.0.15-1.el6.remi will be installed
--> Processing Dependency: php70-php-json(x86-64) = 7.0.15-1.el6.remi for package: php70-php-common-7.0.15-1.el6.remi.x86_64
--> Processing Dependency: php70-runtime for package: php70-php-common-7.0.15-1.el6.remi.x86_64
--> Running transaction check
---> Package php70-php-json.x86_64 0:7.0.15-1.el6.remi will be installed
---> Package php70-runtime.x86_64 0:1.0-5.el6.remi will be installed
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
 Package               Arch        Version                 Repository      Size
================================================================================
Installing:
 php70-php-fpm         x86_64      7.0.15-1.el6.remi       remi-safe      1.4 M
Installing for dependencies:
 php70-php-common      x86_64      7.0.15-1.el6.remi       remi-safe      582 k
 php70-php-json        x86_64      7.0.15-1.el6.remi       remi-safe       55 k
 php70-runtime         x86_64      1.0-5.el6.remi          remi-safe      1.0 M

Transaction Summary
================================================================================
Install       4 Package(s)

Total download size: 3.0 M
Installed size: 8.0 M
Is this ok [y/N]: y
Downloading Packages:
http://rpms.remirepo.net/enterprise/6/safe/x86_64/php70-php-common-7.0.15-1.el6.remi.x86_64.rpm: [Errno 12] Timeout on http://rpms.remirepo.net/enterprise/6/safe/x86_64/php70-php-common-7.0.15-1.el6.remi.x86_64.rpm: (28, 'Operation too slow. Less than 1 bytes/sec transfered the last 3 seconds')
Trying other mirror.
(1/4): php70-php-common-7.0.15-1.el6.remi.x86_64.rpm     | 582 kB     00:43
http://fr2.rpmfind.net/linux/remi/enterprise/6/safe/x86_64/php70-php-fpm-7.0.15-1.el6.remi.x86_64.rpm: [Errno 12] Timeout on http://fr2.rpmfind.net/linux/remi/enterprise/6/safe/x86_64/php70-php-fpm-7.0.15-1.el6.remi.x86_64.rpm: (28, 'Operation too slow. Less than 1 bytes/sec transfered the last 3 seconds')
Trying other mirror.
http://mirrors.mediatemple.net/remi/enterprise/6/safe/x86_64/php70-php-fpm-7.0.15-1.el6.remi.x86_64.rpm: [Errno 12] Timeout on http://mirrors.mediatemple.net/remi/enterprise/6/safe/x86_64/php70-php-fpm-7.0.15-1.el6.remi.x86_64.rpm: (28, 'Operation too slow. Less than 1 bytes/sec transfered the last 3 seconds')
Trying other mirror.
http://remi.mirrors.arminco.com/enterprise/6/safe/x86_64/php70-php-fpm-7.0.15-1.el6.remi.x86_64.rpm: [Errno 12] Timeout on http://remi.mirrors.arminco.com/enterprise/6/safe/x86_64/php70-php-fpm-7.0.15-1.el6.remi.x86_64.rpm: (28, 'connect() timed out!')
Trying other mirror.
(2/4): php70-php-fpm-7.0.15-1.el6.remi.x86_64.rpm        | 1.4 MB     01:56
(3/4): php70-php-json-7.0.15-1.el6.remi.x86_64.rpm       |  55 kB     00:06
http://remi.schlundtech.de/enterprise/6/safe/x86_64/php70-runtime-1.0-5.el6.remi.x86_64.rpm: [Errno 12] Timeout on http://remi.schlundtech.de/enterprise/6/safe/x86_64/php70-runtime-1.0-5.el6.remi.x86_64.rpm: (28, 'Operation too slow. Less than 1 bytes/sec transfered the last 3 seconds')
Trying other mirror.
(4/4): php70-runtime-1.0-5.el6.remi.x86_64.rpm           | 1.0 MB     00:02
--------------------------------------------------------------------------------
Total                                           8.2 kB/s | 3.0 MB     06:16
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : php70-runtime-1.0-5.el6.remi.x86_64                          1/4
  Installing : php70-php-common-7.0.15-1.el6.remi.x86_64                    2/4
  Installing : php70-php-json-7.0.15-1.el6.remi.x86_64                      3/4
  Installing : php70-php-fpm-7.0.15-1.el6.remi.x86_64                       4/4
Unable to connect to dbus
  Verifying  : php70-php-json-7.0.15-1.el6.remi.x86_64                      1/4
  Verifying  : php70-php-common-7.0.15-1.el6.remi.x86_64                    2/4
  Verifying  : php70-php-fpm-7.0.15-1.el6.remi.x86_64                       3/4
  Verifying  : php70-runtime-1.0-5.el6.remi.x86_64                          4/4

Installed:
  php70-php-fpm.x86_64 0:7.0.15-1.el6.remi

Dependency Installed:
  php70-php-common.x86_64 0:7.0.15-1.el6.remi
  php70-php-json.x86_64 0:7.0.15-1.el6.remi
  php70-runtime.x86_64 0:1.0-5.el6.remi

Complete!

运行 php-fpm
显示
-bash: php-fpm: command not found

该怎么解决呢？

安装完php-fpm之后，最后提示

--> Finished Dependency Resolution
Error: php70w-common conflicts with php-common-5.3.3-48.el6_8.x86_64
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest

感觉是PHP5没删干净，跟PHP7冲突。 怎么删掉 php-common-5.3.3-48.el6_8.x86_64 ？