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PHP DirectoryIterator getExtension () function

Syntax:
string DirectoryIterator::getExtension (void)
Parameters:this function takes no parameters.Return value:this function returns a string that contains a file extension, or an empty string if the file does not contain an extension .The following programs illustrate the DirectoryIterator::getExtension() function in PHP:Program 1:  
// Create directory Iterator $directory = new DirectoryIterator (dirname ( __ FILE__ ));  
// Loop for each directory item foreach ( $directory as $dir ) { // Show file extension echo $dir -> getExtension(). "
"
; }
?>
Output:
html css ico PNG php php
Note.Blank lines indicate a folder that does not contain a file extension.Program 2:  
// Create the Iterator directory $directory = new DirectoryIterator (dirname ( __ FILE__ ));  
// Loop while the directory is valid while ( $directory -> valid()) { // Check if item is not a directory if (! $directory -> isDir ( )) { // Show extension echo $directory -> getExtension(). "
"
; } // Move to next item $directory -> next(); }
?>
Output:
html css ico PNG php php
Note . The output of this function depends on the contents of the server folder.Link: https : //www.php.net/manual/en/directoryiterator.getextension.php

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