可以通过phpize编译安装php扩展模块
# yum install openldap openldap-devel
# cd php-7.2.20/ext/ldap/
# /usr/local/php/bin/phpize
# ./configure --with-ldap --with-php-config=/usr/local/php/bin/php-config
# make && make install将编译后生成的so文件复制到php.ini配置文件指定的extension_dir中
# cp php-7.2.20/ext/ldap/modules/ldap.so /usr/lib64/php/modules/修改php配置
# vim /usr/local/php/etc/php.ini
extension_dir = "/usr/lib64/php/modules/"
extension = ldap.so