List files and directories inside the specified path in PHP

List of files:

• 8_1994.pdf
• 1994.pdf
• 62_1994.pdf
• 43_1994.pdf
• 24_1994.pdf
• listagem.php
• 84_1994.pdf
• 1_1994.pdf
• file_index.htm
• 122_1994.pdf
• 57_1994.pdf
• 137_1994.pdf
• 72_1994.pdf
• 4_1994.pdf
• 106_1994.pdf
• 35_1994.pdf