(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
ini_get_all — 获取所有配置选项
返回一个关联数组，指令名称是数组的键。
如果 extension 不存在，返回 false 并产生 E_WARNING 级错误。
当 details 为 true（默认），数组会包含 global_value（php.ini 中的设置）、local_value（可能是 ini_set() 或 .htaccess 中的设置） 以及 access（访问级别）。
当 details 为 false，这个值会是选项的当前值。
参见手册章节中访问级别含义的信息。
注意:
指令可以有多个访问级别，这也是为什么
access会显示适当的位掩码。
示例 #1 ini_get_all() 示例
<?php
print_r(ini_get_all("pcre"));
print_r(ini_get_all());
?>以上示例的输出类似于：
Array
(
[pcre.backtrack_limit] => Array
(
[global_value] => 100000
[local_value] => 100000
[access] => 7
)
[pcre.recursion_limit] => Array
(
[global_value] => 100000
[local_value] => 100000
[access] => 7
)
)
Array
(
[allow_call_time_pass_reference] => Array
(
[global_value] => 0
[local_value] => 0
[access] => 6
)
[allow_url_fopen] => Array
(
[global_value] => 1
[local_value] => 1
[access] => 4
)
...
)
示例 #2 禁用 details
<?php
print_r(ini_get_all("pcre", false)); // Added in PHP 5.3.0
print_r(ini_get_all(null, false)); // Added in PHP 5.3.0
?>以上示例的输出类似于：
Array
(
[pcre.backtrack_limit] => 100000
[pcre.recursion_limit] => 100000
)
Array
(
[allow_call_time_pass_reference] => 0
[allow_url_fopen] => 1
...
)
注意:
ini_get_all() 忽略 "array" 的 ini 选项，例如
pdo.dsn.*。
I guess the third entry is the required access level (to change this variable at runtime):
Constant Value Meaning
PHP_INI_USER 1 Entry can be set in user scripts
PHP_INI_PERDIR 2 Entry can be set in php.ini, .htaccess or httpd.conf
PHP_INI_SYSTEM 4 Entry can be set in php.ini or httpd.conf
PHP_INI_ALL 7 Entry can be set anywhere
See also the docs for ini_set()
Hugo.If you want to load and parse your own ini file, have a look at parse_ini_file() function. Example:
<?php
// ...
$my_data = parse_ini_file($my_file, true);echo recreate_php_ini();
/**
* Sample function to re-create a php ini config file.
*
* @return string
*/
function recreate_php_ini() {
$a = ini_get_all();
$data = [];
foreach (array_keys($a) as $k) {
$ss = split("\.", $k);
if (count($ss) == 1) {
$sec = "PHP";
$v = $k;
} else {
$sec = $ss[0];
$v = $ss[1];
}
$data[$sec][$v] = $a[$k]['global_value'];
}
ksort($data);
$out = "";
foreach ($data as $sec => $data) {
$out .= "[$sec]\n";
ksort($data);
foreach ($data as $k => $v) {
if (is_numeric($v)) {
$out .= sprintf("%-40s = %s\n", $k, $v);
} else {
$out .= sprintf("%-40s = \"%s\"\n", $k, $v);
}
}
$out .= "\n";
}
return $out;
}You can use the following snippet on servers to grab the live/staging configs in order to be able to replicate those in your development environment. (I use `php -a` for this)
<?php
foreach (ini_get_all(null, false) as $key => $value) echo "$key=$value;\n";
?>Since a certain PHP version (I think it's 5.2.5) it is no longer possible to override INI entrys set with php_admin_* in httpd.conf. The access level will be set to 4 (PHP_INI_SYSTEM), which is also returned by this function.
The constants mentioned below are available in PHP, but without the prefix (e.g. INI_USER, INI_PERDIR).