List files and directories inside the specified path in PHP

List of files:

• 57_1995.pdf
• 75_1995.pdf
• 1_1995.pdf
• 40_1995.pdf
• 1995.pdf
• listagem.php
• file_index.htm
• 4_1995.pdf
• 65_1995.pdf
• 12_1995.pdf
• 79_1995.pdf
• 26_1995.pdf