PHP deletes all TXT file solutions in the same directory

PHP deletes all txt files in the same directory
How do you write this statement?

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Go through the folder first, then use PathInfo to determine the extension, and then unlink
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foreach (Glob (' Directory name/*.txt ') as $f)
Unlink ($f);
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PHP Code

$files =glob ("*.txt"); foreach ($files as $file)   unlink ($file);
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   PHP Code
   
   
   
$files =glob ("*.txt"); foreach ($files as $file)   if (Is_file ($file) # # # dir1/dir2/dir3.txt/     unlink ($file);
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When you know that PHP has a function: Glob (), you know how this problem is handled.
Glog () Usage Explanation: http://www.e2003.net/html/article-2984.html
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