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  • ini_get_all()

    (PHP 4 >= 4.2.0, PHP 5, PHP 7)

    获取所有配置选项

    说明

    ini_get_all([string $extension[,bool $details= true]]): array

    获取所有已注册的配置选项

    参数

    $extension

    可选的扩展名称。如果设置了,此函数仅仅返回指定该扩展的选项。

    $details

    获取详细设置或者仅仅是每个设置的当前值。默认是TRUE(获取详细信息)。

    返回值

    返回一个关联数组,指令名称是数组的键。

    $detailsTRUE(默认),数组会包含global_valuephp.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)。

    $detailsFALSE,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。

    Note:

    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。

    注释

    Note:

    ini_get_all()忽略"array"的 ini 选项,例如 pdo.dsn.*。

    更新日志

    版本说明
    5.3.0增加参数$details

    范例

    Example #1ini_get_all()例子

    <?php
    print_r(ini_get_all("pcre"));
    print_r(ini_get_all());
    ?>
    

    以上例程的输出类似于:

    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
            )
        ...
    )
    

    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
    ?>
    

    以上例程的输出类似于:

    Array
    (
        [pcre.backtrack_limit] => 100000
        [pcre.recursion_limit] => 100000
    )
    Array
    (
        [allow_call_time_pass_reference] => 0
        [allow_url_fopen] => 1
        ...
    )
    

    参见

    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.
    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;
    }
    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);
    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).

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