parse_ini_file
(PHP 4, PHP 5, PHP 7)
parse_ini_file — Parse a configuration file
Description
parse_ini_file ( string $filename [, bool $process_sections = false [, int $scanner_mode = INI_SCANNER_NORMAL ]] ) : array
parse_ini_file() loads in the ini file specified in filename, and returns the settings in it in an associative array.
The structure of the ini file is the same as the php.ini's.
Parameters
-
filename -
The filename of the ini file being parsed. If a relative path is used, it is evaluated relative to the current working directory, then the include_path.
-
process_sections -
By setting the
process_sectionsparameter totrue, you get a multidimensional array, with the section names and settings included. The default forprocess_sectionsisfalse -
scanner_mode -
Can either be
INI_SCANNER_NORMAL(default) orINI_SCANNER_RAW. IfINI_SCANNER_RAWis supplied, then option values will not be parsed.As of PHP 5.6.1 can also be specified as
INI_SCANNER_TYPED. In this mode boolean, null and integer types are preserved when possible. String values"true","on"and"yes"are converted totrue."false","off","no"and"none"are consideredfalse."null"is converted tonullin typed mode. Also, all numeric strings are converted to integer type if it is possible.
Return Values
The settings are returned as an associative array on success, and false on failure.
Examples
Example #1 Contents of sample.ini
; 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"
Example #2 parse_ini_file() example
Constants (but not "magic constants" like __FILE__) may also be parsed in the ini file so if you define a constant as an ini value before running parse_ini_file(), it will be integrated into the results. Only ini values are evaluated, and the value must be just the constant. For example:
<?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);
?> The above example will output something similar to:
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
)
[urls] => Array
(
[svn] => http://svn.php.net
[git] => http://git.php.net
)
)
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
)
[urls] => Array
(
[svn] => http://svn.php.net
[git] => http://git.php.net
)
)
)
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;
?> The above example will output something similar to:
(parsed) magic_quotes_gpc = Yes (loaded) magic_quotes_gpc = Yes
Example #4 value interpolation
In addition to evaluating constants, certain characters have special meaning in an ini value. Additionally, environment variables and previously defined values may be read using ${} syntax.
; | 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 to escape a value.
newline_is = "\\n" ; results in the string "\n", not a newline character.
with quotes = "She said \"Exactly my point\"." ; Results in a string with quote marks in it.
path = ${PATH}
also_five = ${five}
The above example will output something similar to:
(parsed) magic_quotes_gpc = Yes (loaded) magic_quotes_gpc = Yes
Notes
Note:
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.
Note:
If a value in the ini file contains any non-alphanumeric characters it needs to be enclosed in double-quotes (").
Note: There are reserved words which must not be used as keys for ini files. These include:
null,yes,no,true,false,on,off,none. Valuesnull,off,noandfalseresult in"", and valueson,yesandtrueresult in"1", unlessINI_SCANNER_TYPEDmode is used (as of PHP 5.6.1). Characters?{}|&~!()^"must not be used anywhere in the key and have a special meaning in the value.
Note:
Entries without an equal sign are ignored. For example, "foo" is ignored whereas "bar =" is parsed and added with an empty value. For example, MySQL has a "no-auto-rehash" setting in my.cnf that does not take a value, so it is ignored.
Note:
ini files are generally treated as plain text by web servers and thus served to browsers if requested. That means for security you must either keep your ini files outside of your docroot or reconfigure your web server to not serve them. Failure to do either of those may introduce a security risk.
See Also
- parse_ini_string() - Parse a configuration string
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https://www.php.net/manual/en/function.parse-ini-file.php