安装pecl及创建快捷键

1、安装pecl及创建快捷键（若安装php时已带可忽略这步安装步骤）

# cd /usr/local/php/bin/     //可查看是否已带有pecl
# wget http://pear.php.net/go-pear.phar -O go-pear.php
# php go-pear.php
# ln -s /usr/local/php
/bin/pecl /usr/bin/pecl

2、查询是否已经收录了该扩展

# pecl search swoole     // swoole为要查询扩展名（以swoole扩展为例）
//查询结果：
Retrieving data...0%
.Matched packages, channel pecl.php.net:
=======================================
Package Stable/(Latest) Local
swoole 1.9.23 (stable) Event-driven asynchronous and concurrent networking engine with high performance for PHP.
swoole_serialize 0.1.1 (beta) the fastest and smallest serialize fucntion bound for php7

3、安装配置扩展

# pecl install swoole
//输出结果：
Build process completed successfully
Installing '/usr/lib64/php/modules/swoole.so'
install ok: channel://pecl.php.net/swoole-1.9.23
configuration option "php_ini" is not set to php.ini location
You should add "extension=swoole.so" to php.ini

# 配置php.ini引用swoole.so然后重启php即可

注：相比于phpize方式安装，pecl方式安装更为简便，可省去手动添加到php.ini的环节
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