(PHP 4 >= 4.0.3, PHP 5, PHP 7, PHP 8)
pathinfo — Returns information about a file path
pathinfo() returns information about
path: either an associative array or a string,
depending on flags.
Note:
For information on retrieving the current path info, read the section on predefined reserved variables.
Note:
pathinfo() operates naively on the input string, and is not aware of the actual filesystem, or path components such as "
..".
Note:
On Windows systems only, the
\character will be interpreted as a directory separator. On other systems it will be treated like any other character.
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.
pathThe path to be parsed.
flags
If present, specifies a specific element to be returned; one of
PATHINFO_DIRNAME,
PATHINFO_BASENAME,
PATHINFO_EXTENSION or
PATHINFO_FILENAME.
If flags is not specified, returns all
available elements.
If the flags parameter is not passed, an
associative array containing the following elements is
returned:
dirname, basename,
extension (if any), and filename.
Note:
If the
pathhas more than one extension,PATHINFO_EXTENSIONreturns only the last one andPATHINFO_FILENAMEonly strips the last one. (see first example below).
Note:
If the
pathdoes not have an extension, noextensionelement will be returned (see second example below).
Note:
If the
basenameof thepathstarts with a dot, the following characters are interpreted asextension, and thefilenameis empty (see third example below).
If flags is present, returns a
string containing the requested element.
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";
?>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
Example #3 pathinfo() example for a dot-file
<?php
print_r(pathinfo('/some/path/.test'));
?>The above example will output something similar to:
Array
(
[dirname] => /some/path
[basename] => .test
[extension] => test
[filename] =>
)
Example #4 pathinfo() example with array dereferencing
The flags parameter is not a bitmask. Only a single value
may be provided. To select only a limited set of parsed values, use array
destructuring like so:
<?php
['basename' => $basename, 'dirname' => $dirname] = pathinfo('/www/htdocs/inc/lib.inc.php');
var_dump($basename, $dirname);
?>The above example will output something similar to:
string(11) "lib.inc.php" string(15) "/www/htdocs/inc"
Use this function in place of pathinfo to make it work with UTF-8 encoded file names too
<?php
function mb_pathinfo($filepath) {
preg_match('%^(.*?)[\\\\/]*(([^/\\\\]*?)(\.([^\.\\\\/]+?)|))[\\\\/\.]*$%im',$filepath,$m);
if($m[1]) $ret['dirname']=$m[1];
if($m[2]) $ret['basename']=$m[2];
if($m[5]) $ret['extension']=$m[5];
if($m[3]) $ret['filename']=$m[3];
return $ret;
}
?>about the path, there are one thing you should note :
On Windows, both slash (/) and backslash (\) are used as directory separator character. In other environments, it is the forward slash (/). (this explain is from basename() function part https://www.php.net/manual/en/function.basename.php)
example:
<?php
$path = "https://urvidutta.com /a\b\c\filename.pdf";
echo pathinfo($pdfUrl, PATHINFO_BASENAME); //get basename
//output
//on window: result is filename.pdf
//on Linux: result is a\b\c\filename.pdf (that is may not your expect)
//so in order to get same result in different system. i will do below first.
$path = str_replace($path, '\\', '/'); //convert '\' to '/'
?>