昨天把ansible-tower安装在这机器上，然后把原来的nginx霸占了，逼迫把zabbix的web换上了apache，源码安装上apache和重新编译php后，就出现这个php错误提示。
把php.ini的session路径改了，然后再把session目录递归权限改为777，然后重启php和apache即可。
附上关于zabbix的apache和php的源码指定的模块
./configure --prefix=/usr/local/php --with-apxs2=/usr/local/apache2.4/bin/apxs --with-config-file-path=/usr/local/php/etc --with-pdo-mysql=/usr/local/mysql --with-mysqli=/usr/local/mysql/bin/mysql_config --with-libxml-dir --with-gd --with-jpeg-dir --with-png-dir --with-freetype-dir --with-iconv-dir --with-zlib-dir --with-bz2 --with-openssl --with-mcrypt --enable-soap --enable-gd-native-ttf --enable-mbstring --enable-sockets --enable-exif
wget https://mirrors.cnnic.cn/apache/httpd/httpd-2.4.29.tar.gz wget https://mirrors.cnnic.cn/apache/apr/apr-1.6.3.tar.gz wget https://mirrors.cnnic.cn/apache/apr/apr-util-1.6.1.tar.gz ./configure --prefix=/usr/local/apache2.4 --with-apr=/usr/local/apr --with-apr-util=/usr/local/apr-util --enable-so --enable-mods-shared=most
★ 在zabbix页面上显示A session had already been started - ignoring session_start()这个提示，把session.auto_start = 1改为0即可
编辑httpd.conf文件
添加如下代码
LoadModule php7_module modules/libphp7.so AddType application/x-httpd-php .php DirectoryIndex index.php index.htm index.html
