php.ini中的設定會影響這些函數的行為。
表格 1. Filesystem and Streams Configuration
Options
Here is a short explanation of the configuration
directives.
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.
注: 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 --disable-url-fopen-wrapper.
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Define the user agent for PHP to send.
Default timeout (in seconds) for socket
based streams.
注: This configuration option was introduced in PHP 4.3.
Define the anonymous ftp password (your
email address).
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.
注: This configuration option was introduced in PHP 4.3.
For related functions, see also the Directory and Program Execution sections.
For a list and explanation of the various URL
wrappers that can be used as remote files, see also 附錄 I.