PHP Pathinfo () function

Pathinfo() - it is a built-in function that is used to return path information using an associative array or string. 
The returned array or string contains the following information:

• Directory name
• Basename
• extension

The path and parameters are sent as parameters to the pathinfo() function, and it returns an associative array containing the directory name, base name, extension of the following elements, if parameter parameter not passed.Syntax:

pathinfo (path, options)

Parameters used:
The pathinfo() function in PHP takes two parameters.

path:is a required parameter and specifies the path to the file .

options:is an optional parameter that can be used to limit the items returned by pathinfo(). By default, it returns all possible values: directory name, base name, extension. 
Possible values ​​can be limited with:

• PATHINFO_DIRNAME - return only dirname
• PATHINFO_BASENAME - return base name only
• PATHINFO_EXTENSION - return only extension

Return value:
It returns an associative array containing the following item catalog name, base name, extension if options is not passed.Errors and Exceptions:

PATHINFO_EXTENSION only returns the last extension if the path has more than one extension.

No extension element is returned if the path does not have an extension.

If the base path name begins with a period, the following characters are interpreted as an extension and the filename is empty.

Examples:

Input: print_r (pathinfo ("/ documents / gfg.txt")); Output: Array ([dirname] = > / documents [basename] = > gfg.txt [extension] = > txt) Input: print_r (pathinfo ("/ documents / gfg.txt", PATHINFO_DIRNAME)); Output: / documents Input: print_r (pathinfo ("/ documents / gfg.txt", PATHINFO_EXTENSION)); Output: txt Input: print_r (pathinfo ("/ documents / gfg.txt", PATHINFO_BASENAME)); Output: gfg.txt 

The programs below illustrate the pathinfo() function.Suppose there is a file named "gfg.txt"Program 1
// return information about
// path using the pathinfo() function print_r ( pathinfo ( "/ documents / gfg.txt" )); ?> Output:

Array ([dirname] = > / documents [basename] = > gfg.txt [extension] = > txt) 

Program 2 // return information about // path to name directory using the pathinfo() function print_r ( pathinfo ( " / documents / gfg.txt " , PATHINFO_DIRNAME)); ?> Output:

/ documents 

Program 3 // return information o // expanding the path using the pathinfo() function print_r ( pathinfo ( " / documents / gfg.txt " , PATHINFO_EXTENSION)); ?> Output:

txt 

Program 4 // return information about // base pathname using pathinfo() print_r ( pathinfo ( "/ documents / gfg .txt " , PATHINFO_BASENAME)); ?> Output:

gfg.txt 

Link:
http : //php.net/manual/en/function.pathinfo.php