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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<chapter xml:id="ldap.examples" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
&reftitle.examples;
<section xml:id="ldap.examples-basic">
<title>Basic usage</title>
<para>
Retrieve information for all entries where the surname starts
with "S" from a directory server, displaying an extract with
name and email address.
</para>
<example>
<title>LDAP search example</title>
<programlisting role="php">
<![CDATA[
<?php
// basic sequence with LDAP is connect, bind, search, interpret search
// result, close connection
echo "<h3>LDAP query test</h3>";
echo "Connecting ...";
$ds=ldap_connect("localhost"); // must be a valid LDAP server!
echo "connect result is " . $ds . "<br />";
if ($ds) {
echo "Binding ...";
$r=ldap_bind($ds); // this is an "anonymous" bind, typically
// read-only access
echo "Bind result is " . $r . "<br />";
echo "Searching for (sn=S*) ...";
// Search surname entry
$sr=ldap_search($ds, "o=My Company, c=US", "sn=S*");
echo "Search result is " . $sr . "<br />";
echo "Number of entries returned is " . ldap_count_entries($ds, $sr) . "<br />";
echo "Getting entries ...<p>";
$info = ldap_get_entries($ds, $sr);
echo "Data for " . $info["count"] . " items returned:<p>";
for ($i=0; $i<$info["count"]; $i++) {
echo "dn is: " . $info[$i]["dn"] . "<br />";
echo "first cn entry is: " . $info[$i]["cn"][0] . "<br />";
echo "first email entry is: " . $info[$i]["mail"][0] . "<br /><hr />";
}
echo "Closing connection";
ldap_close($ds);
} else {
echo "<h4>Unable to connect to LDAP server</h4>";
}
?>
]]>
</programlisting>
</example>
</section>
<section xml:id="ldap.examples-controls">
<title>LDAP Controls</title>
<para>
Here are some examples of using LDAP Controls with PHP >= 7.3.0.
</para>
<example>
<title>Bind with policy information</title>
<programlisting role="php">
<![CDATA[
<?php
$user = 'cn=admin,dc=example,dc=com';
$passwd = 'adminpassword';
$ds = ldap_connect('ldap://localhost');
if ($ds) {
$r = ldap_bind_ext($ds, $user, $passwd, [['oid' => LDAP_CONTROL_PASSWORDPOLICYREQUEST]]);
if (ldap_parse_result($ds, $r, $errcode, $matcheddn, $errmsg, $referrals, $ctrls)) {
if ($errcode != 0) {
die("Error: $errmsg ($errcode)");
}
if (isset($ctrls[LDAP_CONTROL_PASSWORDPOLICYRESPONSE])) {
$value = $ctrls[LDAP_CONTROL_PASSWORDPOLICYRESPONSE]['value'];
echo "Expires in: ".$value['expire']." seconds\n";
echo "Number of auth left: ".$value['grace']."\n";
if (isset($value['error'])) {
echo "Policy error code: ".$value['error'];
}
}
}
} else {
die("Unable to connect to LDAP server");
}
?>
]]>
</programlisting>
</example>
<example>
<title>Modify description only if it's not empty</title>
<programlisting role="php">
<![CDATA[
<?php
// $link is an LDAP connection
$result = ldap_mod_replace_ext(
$link,
'o=test,dc=example,dc=com',
['description' => 'New description'],
[
[
'oid' => LDAP_CONTROL_ASSERT,
'iscritical' => TRUE,
'value' => ['filter' => '(!(description=*))']
]
]
);
// Then use ldap_parse_result
?>
]]>
</programlisting>
</example>
<example>
<title>Read some values before deletion</title>
<programlisting role="php">
<![CDATA[
<?php
// $link is an LDAP connection
$result = ldap_delete_ext(
$link,
'o=test,dc=example,dc=com',
[
[
'oid' => LDAP_CONTROL_PRE_READ,
'iscritical' => TRUE,
'value' => ['attrs' => ['o', 'description']]
]
]
);
// Then use ldap_parse_result
?>
]]>
</programlisting>
</example>
<example>
<title>Delete a reference</title>
<programlisting role="php">
<![CDATA[
<?php
// $link is an LDAP connection
// Without the control it would delete the referenced node
// Make sure to set the control as critical to avoid that
$result = ldap_delete_ext(
$link,
'cn=reference,dc=example,dc=com',
[['oid' => LDAP_CONTROL_MANAGEDSAIT, 'iscritical' => TRUE]]
);
// Then use ldap_parse_result
?>
]]>
</programlisting>
</example>
<example>
<title>Use pagination for a search</title>
<programlisting role="php">
<![CDATA[
<?php
// $link is an LDAP connection
$cookie = '';
do {
$result = ldap_search(
$link, 'dc=example,dc=base', '(cn=*)', ['cn'], 0, 0, 0, LDAP_DEREF_NEVER,
[['oid' => LDAP_CONTROL_PAGEDRESULTS, 'value' => ['size' => 2, 'cookie' => $cookie]]]
);
ldap_parse_result($link, $result, $errcode , $matcheddn , $errmsg , $referrals, $controls);
// To keep the example short errors are not tested
$entries = ldap_get_entries($link, $result);
foreach ($entries as $entry) {
echo "cn: ".$entry['cn'][0]."\n";
}
if (isset($controls[LDAP_CONTROL_PAGEDRESULTS]['value']['cookie'])) {
// You need to pass the cookie from the last call to the next one
$cookie = $controls[LDAP_CONTROL_PAGEDRESULTS]['value']['cookie'];
} else {
$cookie = '';
}
// Empty cookie means last page
} while (strlen($cookie) > 0);
?>
]]>
</programlisting>
</example>
</section>
</chapter>
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sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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-->
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