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<title>Runtime Configuration</title>
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<h2 class="title">Runtime Configuration</h2>
<p class="simpara">
The behaviour of these functions is affected by settings in <var class="filename">php.ini</var>.
</p>
<p class="para">
<table class="doctable table">
<caption><strong>Filesystem and Streams Configuration Options</strong></caption>
<thead>
<tr>
<th>Name</th>
<th>Default</th>
<th>Changeable</th>
<th>Changelog</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td><a href="filesystem.configuration.html#ini.allow-url-fopen" class="link">allow_url_fopen</a></td>
<td>"1"</td>
<td>PHP_INI_SYSTEM</td>
<td class="empty"> </td>
</tr>
<tr>
<td><a href="filesystem.configuration.html#ini.allow-url-include" class="link">allow_url_include</a></td>
<td>"0"</td>
<td>PHP_INI_SYSTEM</td>
<td>Available since PHP 5.2.0.</td>
</tr>
<tr>
<td><a href="filesystem.configuration.html#ini.user-agent" class="link">user_agent</a></td>
<td>NULL</td>
<td>PHP_INI_ALL</td>
<td class="empty"> </td>
</tr>
<tr>
<td><a href="filesystem.configuration.html#ini.default-socket-timeout" class="link">default_socket_timeout</a></td>
<td>"60"</td>
<td>PHP_INI_ALL</td>
<td class="empty"> </td>
</tr>
<tr>
<td><a href="filesystem.configuration.html#ini.from" class="link">from</a></td>
<td>""</td>
<td>PHP_INI_ALL</td>
<td class="empty"> </td>
</tr>
<tr>
<td><a href="filesystem.configuration.html#ini.auto-detect-line-endings" class="link">auto_detect_line_endings</a></td>
<td>"0"</td>
<td>PHP_INI_ALL</td>
<td class="empty"> </td>
</tr>
<tr>
<td><a href="filesystem.configuration.html#ini.sys-temp-dir" class="link">sys_temp_dir</a></td>
<td>""</td>
<td>PHP_INI_SYSTEM</td>
<td>Available since PHP 5.5.0.</td>
</tr>
</tbody>
</table>
</p>
<p class="para">Here's a short explanation of
the configuration directives.</p>
<p class="para">
<dl>
<dt id="ini.allow-url-fopen">
<code class="parameter">allow_url_fopen</code>
<span class="type"><a href="language.types.boolean.html" class="type boolean">boolean</a></span>
</dt>
<dd>
<p class="para">
This option enables the URL-aware fopen wrappers that enable
accessing URL object like files. Default wrappers are provided for
the access of <a href="features.remote-files.html" class="link">remote files</a>
using the ftp or http protocol, some extensions like
<a href="ref.zlib.html" class="link">zlib</a> may register additional
wrappers.
</p>
</dd>
<dt id="ini.allow-url-include">
<code class="parameter">allow_url_include</code>
<span class="type"><a href="language.types.boolean.html" class="type boolean">boolean</a></span>
</dt>
<dd>
<p class="para">
This option allows the use of URL-aware fopen wrappers with the following
functions: <span class="function"><a href="function.include.html" class="function">include</a></span>, <span class="function"><a href="function.include-once.html" class="function">include_once</a></span>,
<span class="function"><a href="function.require.html" class="function">require</a></span>, <span class="function"><a href="function.require-once.html" class="function">require_once</a></span>.
</p>
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
This setting requires allow_url_fopen to be on.
</p>
</p></blockquote>
</dd>
<dt id="ini.user-agent">
<code class="parameter">user_agent</code>
<span class="type"><a href="language.types.string.html" class="type string">string</a></span>
</dt>
<dd>
<p class="para">
Define the user agent for PHP to send.
</p>
</dd>
<dt id="ini.default-socket-timeout">
<code class="parameter">default_socket_timeout</code>
<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>
</dt>
<dd>
<p class="para">
Default timeout (in seconds) for socket based streams.
</p>
</dd>
<dt id="ini.from">
<code class="parameter">from</code>
<span class="type"><a href="language.types.string.html" class="type string">string</a></span>
</dt>
<dd>
<p class="para">
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.
</p>
</dd>
<dt id="ini.auto-detect-line-endings">
<code class="parameter">auto_detect_line_endings</code>
<span class="type"><a href="language.types.boolean.html" class="type boolean">boolean</a></span>
</dt>
<dd>
<p class="para">
When turned on, PHP will examine the data read by
<span class="function"><a href="function.fgets.html" class="function">fgets()</a></span> and <span class="function"><a href="function.file.html" class="function">file()</a></span> to see if it
is using Unix, MS-Dos or Macintosh line-ending conventions.
</p>
<p class="para">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.
</p>
</dd>
<dt id="ini.sys-temp-dir">
<code class="parameter">sys_temp_dir</code>
<span class="type"><a href="language.types.string.html" class="type string">string</a></span>
</dt>
<dd>
<p class="para">
</p>
</dd>
</dl>
</p>
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