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<h1 class="refname">ldap_connect</h1>
<p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">ldap_connect</span> — <span class="dc-title">Connect to an LDAP server</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.ldap-connect-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">resource</span> <span class="methodname"><strong>ldap_connect</strong></span>
([ <span class="methodparam"><span class="type">string</span> <code class="parameter">$hostname</code><span class="initializer"> = <strong><code>NULL</code></strong></span></span>
[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$port</code><span class="initializer"> = 389</span></span>
]] )</div>
<p class="para rdfs-comment">
Establishes a connection to a LDAP server on a specified
<em><code class="parameter">hostname</code></em> and <em><code class="parameter">port</code></em>.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.ldap-connect-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">hostname</code></em></span>
<dd>
<p class="para">
If you are using OpenLDAP 2.x.x you can specify a URL instead of the
hostname. To use LDAP with SSL, compile OpenLDAP 2.x.x with SSL
support, configure PHP with SSL, and set this parameter as
<em>ldaps://hostname/</em>.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">port</code></em></span>
<dd>
<p class="para">
The port to connect to. Not used when using URLs.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.ldap-connect-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns a positive LDAP link identifier on success, or <strong><code>FALSE</code></strong> on error.
When OpenLDAP 2.x.x is used, <span class="function"><strong>ldap_connect()</strong></span> will always
return a <span class="type"><a href="language.types.resource.html" class="type resource">resource</a></span> as it does not actually connect but just
initializes the connecting parameters. The actual connect happens with
the next calls to ldap_* funcs, usually with
<span class="function"><a href="function.ldap-bind.html" class="function">ldap_bind()</a></span>.
</p>
<p class="para">
If no arguments are specified then the link identifier of the already
opened link will be returned.
</p>
</div>
<div class="refsect1 changelog" id="refsect1-function.ldap-connect-changelog">
<h3 class="title">Changelog</h3>
<p class="para">
<table class="doctable informaltable">
<thead>
<tr>
<th>Version</th>
<th>Description</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td>4.0.4</td>
<td>
URL and SSL support was added.
</td>
</tr>
</tbody>
</table>
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.ldap-connect-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-4391">
<p><strong>Example #1 Example of connecting to LDAP server.</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /><br /></span><span style="color: #FF8000">// LDAP variables<br /></span><span style="color: #0000BB">$ldaphost </span><span style="color: #007700">= </span><span style="color: #DD0000">"ldap.example.com"</span><span style="color: #007700">; </span><span style="color: #FF8000">// your ldap servers<br /></span><span style="color: #0000BB">$ldapport </span><span style="color: #007700">= </span><span style="color: #0000BB">389</span><span style="color: #007700">; </span><span style="color: #FF8000">// your ldap server's port number<br /><br />// Connecting to LDAP<br /></span><span style="color: #0000BB">$ldapconn </span><span style="color: #007700">= </span><span style="color: #0000BB">ldap_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$ldaphost</span><span style="color: #007700">, </span><span style="color: #0000BB">$ldapport</span><span style="color: #007700">)<br /> or die(</span><span style="color: #DD0000">"Could not connect to </span><span style="color: #0000BB">$ldaphost</span><span style="color: #DD0000">"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
<div class="example" id="example-4392">
<p><strong>Example #2 Example of connecting securely to LDAP server.</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /><br /></span><span style="color: #FF8000">// make sure your host is the correct one<br />// that you issued your secure certificate to<br /></span><span style="color: #0000BB">$ldaphost </span><span style="color: #007700">= </span><span style="color: #DD0000">"ldaps://ldap.example.com/"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// Connecting to LDAP<br /></span><span style="color: #0000BB">$ldapconn </span><span style="color: #007700">= </span><span style="color: #0000BB">ldap_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$ldaphost</span><span style="color: #007700">)<br /> or die(</span><span style="color: #DD0000">"Could not connect to </span><span style="color: #007700">{</span><span style="color: #0000BB">$ldaphost</span><span style="color: #007700">}</span><span style="color: #DD0000">"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.ldap-connect-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.ldap-bind.html" class="function" rel="rdfs-seeAlso">ldap_bind()</a> - Bind to LDAP directory</span></li>
</ul>
</p>
</div>
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