List files and directories inside the specified path in PHP

List of files:

• 2002.pdf
• 14_2002.pdf
• 4_2002.pdf
• 98_2002.pdf
• 34_2002.pdf
• 1_2002.pdf
• 21_2002.pdf
• 50_2002.pdf
• 81_2002.pdf
• listagem.php
• file_index.htm
• 90_2002.pdf
• 40_2002.pdf
• 75_2002.pdf
• 65_2002.pdf