# php7 安装

提前先看[官方文档-环境依赖](https://wiki.swoole.com/wiki/page/7.html)章节

## 编译安装

> 4、编译前检查
>
> 想要编译必须要安装相应的依赖扩展库可以提前的下载这里使用yum来进行扩展安装，一般需要以下几个扩展支持，否则会出现错误
>
> yum -y install gcc gcc-c++ libxml2-devel m4 autoconf pcre-devel make cmake bison

1、首先通过wget命令下载到指定文件

```php
wget http://cn2.php.net/distributions/php-7.2.4.tar.gz
```

2、通过tar命令解压

```php
tar -zxf    
php-7.2.4.tar.gz
```

3、进入目录利用configure 生成安装文件

在安装包下面一般有个configure， 是用来生成 Makefile，为下一步的编译做准备，你可以通过在 configure 后加上参数来对安装进行控制，具体可以通过configure --help 查看相应的命令，这里只指定了php目录跟配置文件目录，其它任何扩展都没有编译

```php
./configure --prefix=/usr/local/php 
\--prefix=/usr/local/php 
\--with-config-file-path=/usr/local/php/etc  
\--with-mysql-sock=/var/lib/mysql/mysql.sock  
\-with-libxml-dir=/usr
\--with-iconv-dir 
\--with-mhash 
\--with-openssl 
\--with-mysqli=shared,mysqlnd 
\--with-pdo-mysql=shared,mysqlnd 
\--with-gd 
\--with-iconv 
\--with-zlib 
\--enable-zip \--enable-inline-optimization 
\--disable-debug 
\--disable-rpath 
\--enable-shared 
\--enable-xml 
\--enable-bcmath 
\--enable-shmop 
\--enable-sysvsem 
\--enable-mbregex 
\--enable-mbstring 
\--enable-ftp 
\--enable-pcntl 
\--enable-sockets 
\--with-xmlrpc 
\--enable-soap 
\--without-pear 
\--with-gettext 
\--enable-session 
\--with-curl 
\--with-jpeg-dir 
\--with-freetype-dir
```

4、正式安装 make && make install

5、CentOS下将php和mysql命令加入到环境变量中

开发过程中、需要使用到php命令执行程序、但是php命令没有在全局命令中；每次执行都需要加上全路径特别麻烦，把php命令添加到全局变量中，以后每次只用输入php可以了

在centos7.2当中就可以使用下面的方式进行添加

`Vim /etc/profile`文件

![](/files/-LfnTH-fBi8SCHBYl7t3)

然后执行source /etc/profile 让当前的配置生效

6、最后配置文件拷贝到指定的目录

`php -i | grep Configuration` 查询配置文件目录

将源码当中的配置文件指定到相应的目录

```
cp php.ini-development  /usr/local/php/ext/php.ini
```


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