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"; 
?>

display_errors = 1
register_globals = 0
post_max_size = 8M
post_max_size+1 = 9

/* 字符串过滤函数 */
function stringFilter($str)
{
if (ini_get('magic_quotes_gpc)') {
return $str;
} else {
return addslashes($str);
}
}

/* 变量检测函数 */
function getGetVar($var)
{
if (ini_set('register_gobals')) {
return $var;
} else {
return $_GET['var'];
} 
}

ini_set("display_errors", "On");

ini_set("max_execution_time", "180");

ini_set('include_path',ini_get('include_path').':/your_include_dir:'); 

<?php
$inis = ini_get_all();
print_r($inis);
?>  

Array
(
[allow_call_time_pass_reference] => Array
(
[global_value] => 1
[local_value] => 1
[access] => 6
)
[allow_url_fopen] => Array
(
[global_value] => 1
[local_value] => 1
[access] => 7
)
...
)