在文章中，咱们将展现在centOS系统下若是将php升级到5.6，以前经过yum来安装lamp环境，直接升级的话，提示没有更新包，也就是说默认状况下php5.3.3是最新php
查看已经安装的php版本号vim
键入下面代码：ide
php -v
或者
/usr/bin/php
出现下面代码： ui
PHP 5.3.3 (cli) (built: Jul 9 2015 17:39:00)
Copyright (c) 1997-2010 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologiesthis
安装Remi跟EPEL RPM源url
下载并安装，代码以下： .net
wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm && rpm -Uvh epel-release-latest-6.noarch.rpm
wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm && rpm -Uvh remi-release-6*.rpmrem
下载以后：get
vim /etc/yum.repos.d/remi.repoit
而后对里面内容进行如下修改：
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[remi]
name=Remi's RPM repository for Enterprise Linux 6 - $basearch
baseurl=http://rpms.remirepo.net/enterprise/6/remi/$basearch/
mirrorlist=http://rpms.remirepo.net/enterprise/6/remi/mirror
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi
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还有如下：
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[remi-php56]
name=Remi's PHP 5.6 RPM repository for Enterprise Linux 6 - $basearch
baseurl=http://rpms.remirepo.net/enterprise/6/php56/$basearch/
mirrorlist=http://rpms.remirepo.net/enterprise/6/php56/mirror
WARNING: If you enable this repository, you must also enable "remi"
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi
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如今能够yum命令直接升级了
输入如下代码
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yum -y upgrade php*
大概是镜像问题。我获得了报错
Loading mirror speeds from cached hostfile
Could not retrieve mirrorlist http://rpms.remirepo.net/enterprise/6/php55/mirror error was
Timeout on http://rpms.remirepo.net/enterprise/6/php55/mirror: (28, 'Operation too slow. Less than 1 bytes/sec transfered the last 30 seconds')
错误：Cannot find a valid baseurl for repo: remi-php55
而后我yum update -y php*就行了 -_-无奈！
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一旦更新完毕，再次查看php版本号
php -v
出现如下信息
PHP 5.6.30 (cli) (built: Jan 19 2017 08:09:42)
Copyright (c) 1997-2016 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies
到此，php升级完毕