No external libraries are needed to build this extension, but if you want
PHP to support LFS (large files) on Linux, then you need to have a recent
glibc and you need compile PHP with the following compiler flags:
This option enables the URL-aware fopen wrappers that enable
accessing URL object like files. Default wrappers are provided for
the access of remote files
using the ftp or http protocol, some extensions like
zlib may register additional
This setting can only be set in php.ini due to security reasons.
This option was introduced immediately after the release of version
4.0.3. For versions up to and including 4.0.3 you can only disable this
feature at compile time by using the configuration switch
When turned on, PHP will examine the data read by
fgets() and file() to see if it
is using Unix, MS-Dos or Macintosh line-ending conventions.
This enables PHP to interoperate with Macintosh systems,
but defaults to Off, as there is a very small performance penalty
when detecting the EOL conventions for the first line, and also
because people using carriage-returns as item separators under
Unix systems would experience non-backwards-compatible behaviour.
This configuration option was introduced in PHP 4.3.0