寻找需要的 RPM包
http://rpmfind.net/linux/RPM/index.html
安装libxml2 需要 xz-devel zlib-devel 依赖包
yum install xz-devel zlib-devel
rpm -ivh libxml2-2.9.1-6.el7_2.3.x86_64.rpm
rpm -ivh libxml2-devel-2.9.1-6.el7_2.3.x86_64.rpm
如果有2个php版本的话 ,检查并去掉一个
# /usr/bin/php -v
PHP 5.4.16 (cli) (built: Oct 30 2018 19:30:51)
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2013 Zend Technologies
# /usr/local/bin/php -v
PHP 5.4.45 (cli) (built: Mar 28 2019 22:05:42)
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2014 Zend Technologies
#mv php php.5.4.16
#mv php-cgi php-cgi.5.4.16
#mv phpize phpize .5.4.16
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