(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) <?phpforeach (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).