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PHP

Returns information about a file path


pathinfo

(PHP 4 >= 4.0.3, PHP 5)

pathinfoReturns information about a file path

Description

mixed pathinfo ( string $path [, int $options = PATHINFO_DIRNAME | PATHINFO_BASENAME | PATHINFO_EXTENSION | PATHINFO_FILENAME ] )

pathinfo() returns information about path: either an associative array or a string, depending on options.

Parameters

path

The path to be parsed.

options

If present, specifies a specific element to be returned; one of PATHINFO_DIRNAME, PATHINFO_BASENAME, PATHINFO_EXTENSION or PATHINFO_FILENAME.

If options is not specified, returns all available elements.

Return Values

If the options parameter is not passed, an associative array containing the following elements is returned: dirname, basename, extension (if any), and filename.

Note:

If the path does not have an extension, no extension element will be returned (see second example below).

If options is present, returns a string containing the requested element.

Changelog

Version Description
5.2.0 The PATHINFO_FILENAME constant was added.

Examples

Example #1 pathinfo() Example

<?php
$path_parts 
pathinfo('/www/htdocs/inc/lib.inc.php');

echo 
$path_parts['dirname'], "\n";
echo 
$path_parts['basename'], "\n";
echo 
$path_parts['extension'], "\n";
echo 
$path_parts['filename'], "\n"// since PHP 5.2.0
?>

The above example will output:

 /www/htdocs/inc lib.inc.php php lib.inc 

Example #2 pathinfo() example showing difference between null and no extension

<?php
$path_parts 
pathinfo('/path/emptyextension.');
var_dump($path_parts['extension']);

$path_parts pathinfo('/path/noextension');
var_dump($path_parts['extension']);
?>

The above example will output something similar to:

 string(0) "" Notice: Undefined index: extension in test.php on line 6 NULL 

Notes

Note:

For information on retrieving the current path info, read the section on predefined reserved variables.

Note:

pathinfo() is locale aware, so for it to parse a path containing multibyte characters correctly, the matching locale must be set using the setlocale() function.

See Also

  • dirname() - Returns parent directory's path
  • basename() - Returns trailing name component of path
  • parse_url() - Parse a URL and return its components
  • realpath() - Returns canonicalized absolute pathname



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