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<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.parse-ini-file">
 <refnamediv>
  <refname>parse_ini_file</refname>
  <refpurpose>Parse a configuration file</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>array</type><methodname>parse_ini_file</methodname>
   <methodparam><type>string</type><parameter>filename</parameter></methodparam>
   <methodparam choice="opt"><type>bool</type><parameter>process_sections</parameter><initializer>false</initializer></methodparam>
   <methodparam choice="opt"><type>int</type><parameter>scanner_mode</parameter><initializer>INI_SCANNER_NORMAL</initializer></methodparam>
  </methodsynopsis>
  <para>
   <function>parse_ini_file</function> loads in the
   ini file specified in <parameter>filename</parameter>,
   and returns the settings in it in an associative array.
  </para>
  <para>
   The structure of the ini file is the same as the &php.ini;'s.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>filename</parameter></term>
     <listitem>
      <para>
       The filename of the ini file being parsed.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>process_sections</parameter></term>
     <listitem>
      <para>
       By setting the <parameter>process_sections</parameter>
       parameter to &true;, you get a multidimensional array, with
       the section names and settings included. The default
       for <parameter>process_sections</parameter> is &false;      
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>scanner_mode</parameter></term>
     <listitem>
      <para>
       Can either be <constant>INI_SCANNER_NORMAL</constant> (default) or 
       <constant>INI_SCANNER_RAW</constant>. If <constant>INI_SCANNER_RAW</constant> 
       is supplied, then option values will not be parsed.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>
 
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   The settings are returned as an associative <type>array</type> on success,
   and &false; on failure.
  </para>
 </refsect1>

 
 <refsect1 role="changelog">
  &reftitle.changelog;
  <para>
   <informaltable>
    <tgroup cols="2">
     <thead>
      <row>
       <entry>&Version;</entry>
       <entry>&Description;</entry>
      </row>
     </thead>
     <tbody>
      <row>
       <entry>5.3.0</entry>
       <entry>
         Added optional <parameter>scanner_mode</parameter> parameter.
         Single quotes may now be used around variable assignments.
         Hash marks (<literal>#</literal>) may no longer be used as comments
         and will throw a deprecation warning if used.
       </entry>
      </row>
      <row>
       <entry>5.2.7</entry>
       <entry>
        On syntax error this function will return &false; rather then an empty
        array.
       </entry>
      </row>
      <row>
       <entry>5.2.4</entry>
       <entry>
        Keys and section names consisting of numbers are now evaluated as PHP
        <link linkend="language.types.integer">integers</link> thus numbers
        starting by 0 are evaluated as octals and numbers starting by 0x are
        evaluated as hexadecimals.
       </entry>
      </row>
      <row>
       <entry>5.0.0</entry>
       <entry>
        Values enclosed in double quotes can contain new lines.
       </entry>
      </row>
      <row>
       <entry>4.2.1</entry>
       <entry>
        This function is now affected by &safemode;
        and <link linkend="ini.open-basedir">open_basedir</link>.
       </entry>
      </row>
     </tbody>
    </tgroup>
   </informaltable>
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>Contents of <filename>sample.ini</filename></title>
    <programlisting>
<![CDATA[
; This is a sample configuration file
; Comments start with ';', as in php.ini

[first_section]
one = 1
five = 5
animal = BIRD

[second_section]
path = "/usr/local/bin"
URL = "http://www.example.com/~username"

[third_section]
phpversion[] = "5.0"
phpversion[] = "5.1"
phpversion[] = "5.2"
phpversion[] = "5.3"
]]>
    </programlisting>
   </example>
   <example>
    <title><function>parse_ini_file</function> example</title>
    <para>
     <link linkend="language.constants">Constants</link> may also be parsed
     in the ini file so if you define a constant as an ini value before
     running <function>parse_ini_file</function>, it will be integrated into
     the results.  Only ini values are evaluated.  For example:
    </para>
    <programlisting role="php">
<![CDATA[
<?php

define('BIRD', 'Dodo bird');

// Parse without sections
$ini_array = parse_ini_file("sample.ini");
print_r($ini_array);

// Parse with sections
$ini_array = parse_ini_file("sample.ini", true);
print_r($ini_array);

?>
]]>
    </programlisting>
    &example.outputs.similar;
    <screen>
<![CDATA[
Array
(
    [one] => 1
    [five] => 5
    [animal] => Dodo bird
    [path] => /usr/local/bin
    [URL] => http://www.example.com/~username
    [phpversion] => Array
        (
            [0] => 5.0
            [1] => 5.1
            [2] => 5.2
            [3] => 5.3
        )

)
Array
(
    [first_section] => Array
        (
            [one] => 1
            [five] => 5
            [animal] => Dodo bird
        )

    [second_section] => Array
        (
            [path] => /usr/local/bin
            [URL] => http://www.example.com/~username
        )

    [third_section] => Array
        (
            [phpversion] => Array
                (
                    [0] => 5.0
                    [1] => 5.1
                    [2] => 5.2
                    [3] => 5.3
                )

        )

)
]]>
    </screen>
   </example>
  </para>
  <para>
   <example>
    <title><function>parse_ini_file</function> parsing a php.ini file</title>
    <programlisting role="php">
<![CDATA[
<?php
// A simple function used for comparing the results below
function yesno($expression)
{
    return($expression ? 'Yes' : 'No');
}

// Get the path to php.ini using the php_ini_loaded_file() 
// function available as of PHP 5.2.4
$ini_path = php_ini_loaded_file();

// Parse php.ini
$ini = parse_ini_file($ini_path);

// Print and compare the values, note that using get_cfg_var()
// will give the same results for parsed and loaded here
echo '(parsed) magic_quotes_gpc = ' . yesno($ini['magic_quotes_gpc']) . PHP_EOL;
echo '(loaded) magic_quotes_gpc = ' . yesno(get_cfg_var('magic_quotes_gpc')) . PHP_EOL;
?>
]]>
    </programlisting>
    &example.outputs.similar;
    <screen>
<![CDATA[
(parsed) magic_quotes_gpc = Yes
(loaded) magic_quotes_gpc = Yes
]]>
    </screen>
   </example>
  </para>
 </refsect1>

 <refsect1 role="notes">
  &reftitle.notes;
  <note>
   <para>
    This function has nothing to do with the
    &php.ini; file. It is already processed by
    the time you run your script. This function can be used to
    read in your own application's configuration files.
   </para>
  </note>
  <note>
   <para>
    If a value in the ini file contains any non-alphanumeric
    characters it needs to be enclosed in double-quotes (").
   </para>
  </note>
  <note>
   <simpara>
    There are reserved words which must not be used as keys for
    ini files.  These include: null, yes, no, true, false, on, off, none.
    Values null, no and false results in "", yes and true results in "1".
    Characters <literal>?{}|&amp;~![()^"</literal> must not be used anywhere in
    the key and have a special meaning in the value.
   </simpara>
  </note>
 </refsect1>
 
 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>parse_ini_string</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

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