Runtime Configuration

The behaviour of these functions is affected by
settings in php.ini.

Here’s a short explanation of the configuration
directives.

allow_url_fopen boolean

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 wrappers.

allow_url_include boolean

This option allows the use of URL-aware fopen
wrappers with the following functions: include, include_once, require,
require_once.

Note:

This setting requires allow_url_fopen to be on.

user_agent
string

Define the user agent for PHP to send.

default_socket_timeout integer

Default timeout (in seconds) for socket based
streams.

from string

The email address to be used on unauthenticated FTP
connections and as the value of From header for HTTP connections,
when using the ftp and http wrappers, respectively.

auto_detect_line_endings boolean

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.

sys_temp_dir string