针对配置文件操作 PHP最常用的四个ini函数

<?php

/*

Our php.ini contains the following settings:
display_errors = On

register_globals = Off

post_max_size = 8M

*/

echo 'display_errors = ' . ini_get('display_errors') . "\n"; //显示错误是否打开

echo 'register_globals = ' . ini_get('register_globals') . "\n";//全局变量是否打开

echo 'post_max_size = ' . ini_get('post_max_size') . "\n";//最多能提交的文件大小

echo 'post_max_size+1 = ' . (ini_get('post_max_size')+1) . "\n"; 

?>