List files and directories inside the specified path in PHP

List of files:

• 43_1999.pdf
• 4_1999.pdf
• 95_1999.pdf
• 14_1999.pdf
• 27_1999.pdf
• 115_1999.pdf
• 52_1999.pdf
• 87_1999.pdf
• listagem.php
• file_index.htm
• 68_1999.pdf
• 62_1999.pdf
• 105_1999.pdf
• 1999.pdf
• 1_1999.pdf
• 79_1999.pdf