parse_ini_file

(PHP 4, PHP 5, PHP 7, PHP 8)

parse_ini_file — 解析一个配置文件

说明

parse_ini_file ( string $filename , bool $process_sections = false , int $scanner_mode = INI_SCANNER_NORMAL ) : array

parse_ini_file() 载入一个由 filename 指定的 ini 文件，并将其中的设置作为一个联合数组返回。

ini 文件的结构和 php.ini 的相似。

参数

filename

要解析的 ini 文件的文件名。

process_sections

如果将最后的 process_sections 参数设为 true，将得到一个多维数组，包括了配置文件中每一节的名称和设置。process_sections 的默认值是 false。

scanner_mode

Can either be INI_SCANNER_NORMAL (default) or INI_SCANNER_RAW. If INI_SCANNER_RAW is supplied, then option values will not be parsed.

返回值

成功时以关联数组 array 返回设置，失败时返回 false。

范例

Example #1 sample.ini 的内容

; 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"

Example #2 parse_ini_file() 例子

常量也可以在 ini 文件中被解析，因此如果在运行 parse_ini_file() 之前定义了常量作为 ini 的值，将会被集成到结果中去。只有 ini 的值会被求值。例如：

<?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);

?>

以上例程的输出类似于：

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
                )

        )

)

Example #3 parse_ini_file() parsing a php.ini file

<?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;
?>

以上例程的输出类似于：

(parsed) magic_quotes_gpc = Yes
(loaded) magic_quotes_gpc = Yes

注释

Note:

本函数和 php.ini 文件没有关系，该文件在运行脚本时就已经处理过了。本函数可以用来读取你自己的应用程序的配置文件。

Note:

如果 ini 文件中的值包含任何非字母数字的字符，需要将其括在双引号中（"）。

Note: 有些保留字不能作为 ini 文件中的键名，包括：null，yes，no，true 和 false。值为 null，no 和 false 等效于 ""，值为 yes 和 true 等效于 "1"。字符 {}|&~![()" 也不能用在键名的任何地方，而且这些字符在选项值中有着特殊的意义。

参见

User Contributed Notes

Rubn Martnez 15-Jul-2018 01:06
The parse_ini_file function does have trouble loading valid Windows ini files like, for example, nternet shortcuts (.url files).

This is due to the function reading the URLs as a value, and failing when it finds that valid URL characters like '=' appear unescaped or the value unquoted as a whole. Since Windows does not escape them anyway, the solution is to scan it in raw mode, where it will read unparsed the value after the first '='. Since = only appears in URLs with parameters, this mistake may is not be obvious at a first glance.

An example

<?php

$links = array();

// ...

$files = scandir($directory);
foreach( $files as $filename )
{
    if (strToLower(pathinfo($filename, PATHINFO_EXTENSION)) === 'url')
    {
        $shortcut = parse_ini_file( $directory.DIRECTORY_SEPARATOR.$filename, true,  INI_SCANNER_RAW);
        if ($shortcut === false) die('Syntax Error');
        $url = $shortcut['InternetShortcut']['URL'];
        $links []= $url;
    }
}

?>
info () gaj ! design 16-Dec-2016 02:26
Not mentioned in the documentation, this function acts like include:

"Files are included based on the file path given or, if none is given, the include_path specified. If the file isn't found in the include_path, include will finally check in the calling script's own directory and the current working directory before failing."

(At least for PHP 7; have not checked PHP 5.)
YAPs 03-Jul-2016 08:49
This function for save ini files

<?php
function array_to_ini($array,$out="")
{
    $t="";
    $q=false;
    foreach($array as $c=>$d)
    {
        if(is_array($d))$t.=array_to_ini($d,$c);
        else
        {
            if($c===intval($c))
            {
                if(!empty($out))
                {
                    $t.="\r\n".$out." = \"".$d."\"";
                    if($q!=2)$q=true;
                }
                else $t.="\r\n".$d;
            }
            else
            {   
                $t.="\r\n".$c." = \"".$d."\"";
                $q=2;
            }
        }
    }
    if($q!=true && !empty($out)) return "[".$out."]\r\n".$t;
    if(!empty($out)) return  $t;
    return trim($t);
}

function save_ini_file($array,$file)
{
    $a=array_to_ini($array);
    $ffl=fopen($file,"w");
    fwrite($ffl,$a);
    fclose($ffl);
}
?>
dschnepper at box dot com 09-Mar-2016 09:21
The documentation states:
Characters ?{}|&~!()^" must not be used anywhere in the key and have a special meaning in the value.

Here's the results of my experiments on what they mean:

; | is used for bitwise OR
three = 2|3

; & is used for bitwise AND
four = 6&5

; ^ is used for bitwise XOR
five = 3^6

; ~ is used for bitwise negate
negative_two = ~1

; () is used for grouping
seven = (8|7)&(6|5)

; ${...} is used for grabbing values from the environment, or previously defined values.
path = ${PATH}
also = ${five}

; ? I have no guess for
; ! I have no guess for
jbricci at ya-right dot com 15-Oct-2015 06:39
This core function won't handle ini key[][] = value(s), (multidimensional arrays), so if you need to support that kind of setup you will need to write your own function. one way to do it is to convert all the key = value(s) to array string [key][][]=value(s), then use parse_str() to convert all those [key][][]=value(s) that way you just read the ini file line by line, instead of doing crazy foreach() loops to handle those (multidimensional arrays) in each section, example...

ini file...... config.php

<?php

; 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"

urls[svn] = "http://svn.php.net"
urls[git] = "http://git.php.net"

[fourth_section]

a[][][] = b
a[][][][] = c
a[test_test][][] = d
test[one][two][three] = true

?>

echo parse_ini_file ( "C:\\services\\www\\docs\\config.php" );

results in...

// PHP Warning:  syntax error, unexpected TC_SECTION, expecting '=' line 27 -> a[][][] = b

Here it simple function that handles (multidimensional arrays) without looping each key[][]= value(s)

<?php

function getIni ( $file, $sections = FALSE )
{
    $return = array ();

    $keeper = array ();

    $config = fopen ( $file, 'r' );

    while ( ! feof ( $config ) )
    {
        $line = trim ( fgets ( $config, 1024 ) );

        $line = ( $line == '' ) ? ' ' : $line;

        switch ( $line{0} )
        {
            case ' ':
            case '#':
            case '/':
            case ';':
            case '<':
            case '?':

            break;

            case '[':

            if ( $sections )
            {
                $header = 'config[' . trim ( substr ( $line, 1, -1 ) ) . ']';
            }
            else
            {
                $header = 'config';
            }

            break;

            default:

            $kv = array_map ( 'trim', explode ( '=', $line ) );

            $kv[0] = str_replace ( ' ', '+', $kv[0] );

            $kv[1] = str_replace ( ' ', '+', $kv[1] );

            if ( ( $pos = strpos ( $kv[0], '[' ) ) !== FALSE )
            {
                $kv[0] = '[' . substr ( $kv[0], 0, $pos ) . ']' . substr ( $kv[0], $pos );
            }
            else
            {
                $kv[0] = '[' . $kv[0] . ']';
            }

            $bt = strtolower ( $kv[1] );

            if ( in_array ( $bt, array ( 'true', 'false', 'on', 'off' ) ) )
            {
                $kv[1] = ( $bt == 'true' || $bt == 'on' ) ? TRUE : FALSE;
            }

            $keeper[] = $header . $kv[0] . '=' . $kv[1];
        }
    }

    fclose ( $config );

    parse_str ( implode ( '&', $keeper ), $return );

    return $return['config'];
}

// usage...

$sections = TRUE;

print_r ( $config->getIni ( "C:\\services\\www\\docs\\config.php" ),  $sections );

?>
Rekam 13-Apr-2014 09:59
You may want, in some very special cases, to parse multi-dimensional array with N levels in your ini file. Something like setting[data][config][debug] = true will result in an error (expected "=").

Here's a little function to match this, using dots (customizable).
<?php
function parse_ini_file_multi($file, $process_sections = false, $scanner_mode = INI_SCANNER_NORMAL) {
    $explode_str = '.';
    $escape_char = "'";
    // load ini file the normal way
    $data = parse_ini_file($file, $process_sections, $scanner_mode);
    if (!$process_sections) {
        $data = array($data);
    }
    foreach ($data as $section_key => $section) {
        // loop inside the section
        foreach ($section as $key => $value) {
            if (strpos($key, $explode_str)) {
                if (substr($key, 0, 1) !== $escape_char) {
                    // key has a dot. Explode on it, then parse each subkeys
                    // and set value at the right place thanks to references
                    $sub_keys = explode($explode_str, $key);
                    $subs =& $data[$section_key];
                    foreach ($sub_keys as $sub_key) {
                        if (!isset($subs[$sub_key])) {
                            $subs[$sub_key] = [];
                        }
                        $subs =& $subs[$sub_key];
                    }
                    // set the value at the right place
                    $subs = $value;
                    // unset the dotted key, we don't need it anymore
                    unset($data[$section_key][$key]);
                }
                // we have escaped the key, so we keep dots as they are
                else {
                    $new_key = trim($key, $escape_char);
                    $data[$section_key][$new_key] = $value;
                    unset($data[$section_key][$key]);
                }
            }
        }
    }
    if (!$process_sections) {
        $data = $data[0];
    }
    return $data;
}
?>

The following file:
<?php
/*
[normal]
foo = bar
; use quotes to keep your key as it is
'foo.with.dots' = true

[array]
foo[] = 1
foo[] = 2

[dictionary]
foo[debug] = false
foo[path] = /some/path

[multi]
foo.data.config.debug = true
foo.data.password = 123456
*/
?>

will result in:
<?php
parse_ini_file_multi('file.ini', true);

Array
(
    [normal] => Array
        (
            [foo] => bar
            [foo.with.dots] => 1
        )
    [array] => Array
        (
            [foo] => Array
                (
                    [0] => 1
                    [1] => 2
                )
        )
    [dictionary] => Array
        (
            [foo] => Array
                (
                    [debug] =>
                    [path] => /some/path
                )
        )
    [multi] => Array
        (
            [foo] => Array
                (
                    [data] => Array
                        (
                            [config] => Array
                                (
                                    [debug] => 1
                                )
                            [password] => 123456
                        )
                )
        )
)
?>
simon dot riget at gmail dot com 21-Feb-2013 07:23
.ini files or JSON file format as it is also known as, are very useful format to store stuff in. Especially large arrays.

Strangely enough there is this nice function to read the file, but no function to write it.

So here is one.

Use it as:  put_ini_file(string $file, array $array)

<?php
function put_ini_file($file, $array, $i = 0){
  $str="";
  foreach ($array as $k => $v){
    if (is_array($v)){
      $str.=str_repeat(" ",$i*2)."[$k]".PHP_EOL;
      $str.=put_ini_file("",$v, $i+1);
    }else
      $str.=str_repeat(" ",$i*2)."$k = $v".PHP_EOL;
  }
 if($file)
    return file_put_contents($file,$str);
  else
    return $str;
}
?>
jeremygiberson at gmail dot com 30-Apr-2009 04:01
Here is a quick parse_ini_file wrapper to add extend support to save typing and redundancy.
<?php
    /**
     * Parses INI file adding extends functionality via ":base" postfix on namespace.
     *
     * @param string $filename
     * @return array
     */
    function parse_ini_file_extended($filename) {
        $p_ini = parse_ini_file($filename, true);
        $config = array();
        foreach($p_ini as $namespace => $properties){
            list($name, $extends) = explode(':', $namespace);
            $name = trim($name);
            $extends = trim($extends);
            // create namespace if necessary
            if(!isset($config[$name])) $config[$name] = array();
            // inherit base namespace
            if(isset($p_ini[$extends])){
                foreach($p_ini[$extends] as $prop => $val)
                    $config[$name][$prop] = $val;
            }
            // overwrite / set current namespace values
            foreach($properties as $prop => $val)
            $config[$name][$prop] = $val;
        }
        return $config;
    }
?>

Treats this ini:
<?php
/*
[base]
host=localhost
user=testuser
pass=testpass
database=default

[users:base]
database=users

[archive : base]
database=archive
*/
?>
As if it were like this:
<?php
/*
[base]
host=localhost
user=testuser
pass=testpass
database=default

[users:base]
host=localhost
user=testuser
pass=testpass
database=users

[archive : base]
host=localhost
user=testuser
pass=testpass
database=archive
*/
?>
goulven.ch AT gmail DOT com 29-Oct-2007 06:33
Warning: parse_ini_files cannot cope with values containing the equal sign (=).

The following function supports sections, comments, arrays, and key-value pairs outside of any section.
Beware that similar keys will overwrite one another (unless in different sections).

<?php
function parse_ini ( $filepath ) {
    $ini = file( $filepath );
    if ( count( $ini ) == 0 ) { return array(); }
    $sections = array();
    $values = array();
    $globals = array();
    $i = 0;
    foreach( $ini as $line ){
        $line = trim( $line );
        // Comments
        if ( $line == '' || $line{0} == ';' ) { continue; }
        // Sections
        if ( $line{0} == '[' ) {
            $sections[] = substr( $line, 1, -1 );
            $i++;
            continue;
        }
        // Key-value pair
        list( $key, $value ) = explode( '=', $line, 2 );
        $key = trim( $key );
        $value = trim( $value );
        if ( $i == 0 ) {
            // Array values
            if ( substr( $line, -1, 2 ) == '[]' ) {
                $globals[ $key ][] = $value;
            } else {
                $globals[ $key ] = $value;
            }
        } else {
            // Array values
            if ( substr( $line, -1, 2 ) == '[]' ) {
                $values[ $i - 1 ][ $key ][] = $value;
            } else {
                $values[ $i - 1 ][ $key ] = $value;
            }
        }
    }
    for( $j=0; $j<$i; $j++ ) {
        $result[ $sections[ $j ] ] = $values[ $j ];
    }
    return $result + $globals;
}
?>

Example usage:
<?php
$stores = parse_ini('stores.ini');
print_r( $stores );
?>

An example ini file:
<?php
/*
;Commented line start with ';'
global_value1 = a string value
global_value1 = another string value

; empty lines are discarded
[Section1]
key = value
; whitespace around keys and values is discarded too
otherkey=other value
otherkey=yet another value
; this key-value pair will overwrite the former.
*/
?>
www.onphp5.com 24-Oct-2007 01:26
Looks like in PHP 5.3.0 special characters like \n are extrapolated into real newlines. Gotta use \\n.
yarco dot w at gmail dot com 29-Jun-2007 01:46
parse_ini_file can't deal with const which cancate a string. For example, if test.ini file is

classPath = ROOT/lib

If you:
<?php
define('ROOT', dirname(__FILE__));

$buf = parse_ini_file('test.ini');
?>

const ROOT would't be parsed.

But my version could work find.

<?php
// array parse_ini_file ( string $filename [, bool $process_sections] )
function parse_ini($filename, $process_sections = false)
{
  function replace_process(& $item, $key, $consts)
  {
    $item = str_replace(array_keys($consts), array_values($consts), $item);
  }

  $buf = get_defined_constants(true); // PHP version > 5.0
  $consts = $buf['user'];
  $ini = parse_ini_file($filename, $process_sections);

  array_walk_recursive($ini, 'replace_process', $consts);
  return $ini;
}

define('ROOT', '/test');
print_r(parse_ini(dirname(__FILE__).'/test.ini'));

?>
Justin Hall 31-Oct-2006 11:46
This is a simple (but slightly hackish) way of avoiding the character limitations (in values):

<?php
define('QUOTE', '"');
$test = parse_ini_file('test.ini');

echo "<pre>";
print_r($test);
?>

contents of test.ini:

park yesterday = "I (walked) | {to} " QUOTE"the"QUOTE " park yesterday & saw ~three~ dogs!"

output:

<?php
Array
(
    [park yesterday] => I (walked) | {to} "the" park yesterday & saw ~three~ dogs!
)
?>
dimk at pisem dot net 13-Jul-2005 09:33
Class to access ini values at format "section_name.property", for example $myconf->get("system.name") returns a property "name" in section "system":

<?php
class Settings {

var $properties = array();

    function Settings() {
        $this->properties = parse_ini_file(_SETTINGS_FILE, true);
    }

    function get($name) {
        if(strpos($name, ".")) {
            list($section_name, $property) = explode(".", $name);
            $section =& $this->properties[$section_name];
            $name = $property;
        } else {
            $section =& $properties;
        }

        if(is_array($section) && isset($section[$name])) {
            return $section[$name];
        }
        return false;
    }

}
?>
waikeatNOSPAM at archerlogic dot com 09-Nov-2003 06:37
I found that this function will not work on remote files.
I tried

$someArray = parse_ini_file("http://www.example.com/setting.ini");

and it reports

Cannot Open 'http://www.example.com/setting.ini' for reading ...
kieran dot huggins at rogers dot com 07-Jan-2003 10:24
Just a quick note for all those running into trouble escaping double quotes:

I got around this by "base64_encode()"-ing my content on the way in to the ini file, and "base64_decode()"-ing on the way out.

Because base64 uses the "=" sign, you will have to encapsulate the entire value in double quotes so the line looks like this:

    varname = "TmlhZ2FyYSBGYWxscywgT04="

When base64'd, your strings will retain all \n, \t...etc...  URL's retain everything perfectly :-)

I hope some of you find this useful!

Cheers, Kieran