Practical Web Technologies

15.2. Using server storage

15.2.1. Open a file for reading

Using server storage creates a permanent and reliable record for your Web activity, which in many cases is vital for many applications. For a simple page counter, database, or money transaction business, the ability to use server storage is critical.

To open a file using Perl script, the following statement is often used:

   open (filehandle, "<filename");

This open command opens the file filename for reading and assigns a filehandle variable to control it. For different file operations, there are different file open modes. Some of the frequently used file open modes are listed in Table 15.1.

Table 15.1. File open modes

Mode	Operation	Description and example
<	Reading	Open a file for reading, ...