vim /etc/php/7.0/fpm/php.ini
找到 display_errors ，修改为
display_errors = on ， 保存
重启 php
/etc/init.d/php7.0-fpm restart
重启 nginx
nginx -s reload
错误代码
<?php
$firstName = 'Andy';
$nameLength = str_len($firstName);
$myVar = 'Hi, my name is ' . $nameLength . ' letters long.';
echo $myVar;
错误如下：
Fatal error: Uncaught Error: Call to undefined function str_len() in /mnt/share/PHP/www/errorDisplay/index.php:4 Stack trace: #0 {main} thrown in /mnt/share/PHP/www/errorDisplay/index.php on line 4
php 的配置文件: /etc/php/7.0/fpm/php.ini
php 的log文件: /var/log/php7.0-fpm.log
nginx 的配置文件: /etc/nginx/nginx.conf
nginx 的log文件:
/etc/log/nginx/access.log
/etc/log/nginx/error.log
