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<title>Sets the include_path configuration option</title>
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<div class="refnamediv">
<h1 class="refname">set_include_path</h1>
<p class="verinfo">(PHP 4 >= 4.3.0, PHP 5)</p><p class="refpurpose"><span class="refname">set_include_path</span> — <span class="dc-title">Sets the include_path configuration option</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.set-include-path-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">string</span> <span class="methodname"><strong>set_include_path</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$new_include_path</code></span>
)</div>
<p class="para rdfs-comment">
Sets the <a href="ini.core.html#ini.include-path" class="link">include_path</a>
configuration option for the duration of the script.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.set-include-path-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">new_include_path</code></em></span>
<dd>
<p class="para">
The new value for the <a href="ini.core.html#ini.include-path" class="link">include_path</a>
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.set-include-path-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns the old <a href="ini.core.html#ini.include-path" class="link">include_path</a> on
success or <strong><code>FALSE</code></strong> on failure.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.set-include-path-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-519">
<p><strong>Example #1 <span class="function"><strong>set_include_path()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// Works as of PHP 4.3.0<br /></span><span style="color: #0000BB">set_include_path</span><span style="color: #007700">(</span><span style="color: #DD0000">'/usr/lib/pear'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Works in all PHP versions<br /></span><span style="color: #0000BB">ini_set</span><span style="color: #007700">(</span><span style="color: #DD0000">'include_path'</span><span style="color: #007700">, </span><span style="color: #DD0000">'/usr/lib/pear'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
</p>
<p class="para">
<div class="example" id="example-520">
<p><strong>Example #2 Adding to the include path</strong></p>
<div class="example-contents"><p>
Making use of the <strong><code>PATH_SEPARATOR</code></strong> constant, it is
possible to extend the include path regardless of the operating system.
</p></div>
<div class="example-contents"><p>
In this example we add <var class="filename">/usr/lib/pear</var> to the end of
the existing <em>include_path</em>.
</p></div>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$path </span><span style="color: #007700">= </span><span style="color: #DD0000">'/usr/lib/pear'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">set_include_path</span><span style="color: #007700">(</span><span style="color: #0000BB">get_include_path</span><span style="color: #007700">() . </span><span style="color: #0000BB">PATH_SEPARATOR </span><span style="color: #007700">. </span><span style="color: #0000BB">$path</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.set-include-path-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.ini-set.html" class="function" rel="rdfs-seeAlso">ini_set()</a> - Sets the value of a configuration option</span></li>
<li class="member"> <span class="function"><a href="function.get-include-path.html" class="function" rel="rdfs-seeAlso">get_include_path()</a> - Gets the current include_path configuration option</span></li>
<li class="member"> <span class="function"><a href="function.restore-include-path.html" class="function" rel="rdfs-seeAlso">restore_include_path()</a> - Restores the value of the include_path configuration option</span></li>
<li class="member"> <span class="function"><a href="function.include.html" class="function" rel="rdfs-seeAlso">include</a> - include</span></li>
</ul>
</p>
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