在Mac上安装pecl

curl -O http://pear.php.net/go-pear.phar
sudo php -d detect_unicode=0 go-pear.phar
输入1，回车，配置pear路径为：/usr/local/pear
输入4，回车，配置命令路径为：/usr/local/bin

sudo pecl config-show 查看配置
sudo pecl config-set ext_dir /usr/lib/php5/20131226
sudo pecl config-set php_dir /usr/share/php5
sudo pecl config-set php_bin /usr/bin/php5