List files and directories inside the specified path in PHP

List of files:

• 86_1998.pdf
• 1_1998.pdf
• 55_1998.pdf
• 47_1998.pdf
• 1998.pdf
• 27_1998.pdf
• 14_1998.pdf
• 35_1998.pdf
• 80_1998.pdf
• listagem.php
• 4_1998.pdf
• file_index.htm
• 96_1998.pdf
• 65_1998.pdf