List files and directories inside the specified path in PHP

List of files:

• 37_1996.pdf
• 98_1996.pdf
• 94_1996.pdf
• 85_1996.pdf
• 1_1996.pdf
• 12_1996.pdf
• listagem.php
• file_index.htm
• 110_1996.pdf
• 22_1996.pdf
• 47_1996.pdf
• 1996.pdf
• 61_1996.pdf
• 30_1996.pdf
• 4_1996.pdf
• 101_1996.pdf