(PHP 4 >= 4.3.0, PHP 5, PHP 7)
glob — Find pathnames matching a pattern
$pattern
   [, int $flags = 0
  ] )
   The glob() function searches for all the pathnames
   matching pattern according to the rules used by
   the libc glob() function, which is similar to the rules used by common
   shells.
  
patternThe pattern. No tilde expansion or parameter substitution is done.
flagsValid flags:
GLOB_MARK - Adds a slash to each directory returned
         
        GLOB_NOSORT - Return files as they appear in the
          directory (no sorting). When this flag is not used, the pathnames are
          sorted alphabetically
         
        GLOB_NOCHECK - Return the search pattern if no
          files matching it were found
         
        GLOB_NOESCAPE - Backslashes do not quote
          metacharacters
         
        GLOB_BRACE - Expands {a,b,c} to match 'a', 'b',
          or 'c'
         
        GLOB_ONLYDIR - Return only directory entries
          which match the pattern
         
        GLOB_ERR - Stop on read errors (like unreadable
          directories), by default errors are ignored.
         
        
   Returns an array containing the matched files/directories, an empty array
   if no file matched or FALSE on error.
  
Note:
On some systems it is impossible to distinguish between empty match and an error.
| Version | Description | 
|---|---|
| 5.1.0 | GLOB_ERRwas added | 
Example #1 Convenient way how glob() can replace opendir() and friends.
<?php
foreach (glob("*.txt") as $filename) {
    echo "$filename size " . filesize($filename) . "\n";
}
?>
The above example will output something similar to:
funclist.txt size 44686 funcsummary.txt size 267625 quickref.txt size 137820
Note: This function will not work on remote files as the file to be examined must be accessible via the server's filesystem.
Note: This function isn't available on some systems (e.g. old Sun OS).
Note: The
GLOB_BRACEflag is not available on some non GNU systems, like Solaris.