Search files in directory with PHP

• How to search files in a directory with php.
• search a file from a folder with php.

This script searches the files located in folder by matching keyword.

Script

$string_to_search='btn';

$path='pictures/products/';

$handle=opendir($path);

while(($file = readdir($handle))!==false){

	if ($file!="." && $file!=".."){

		if(strstr($file,$string_to_search)!==false){
			echo $file . ', ';
		}	
	}
}

Output

btnDelete.gif, Previewbtn.gif