ldap_escape

(PHP 5 >= 5.6.0, PHP 7)

ldap_escape — Escape a string for use in an LDAP filter or DN

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ldap_escape ( string $value [, string $ignore = "" [, int $flags = 0 ]] ) : string

Escapes value for use in the context implied by flags.

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value

The value to escape.

ignore

Characters to ignore when escaping.

flags

The context the escaped string will be used in: LDAP_ESCAPE_FILTER for filters to be used with ldap_search(), or LDAP_ESCAPE_DN for DNs. If neither flag is passed, all chars are escaped.

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Returns the escaped string.

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When building an LDAP filter, you should use ldap_escape with LDAP_ESCAPE_FILTER flag.

Example #1 Searching for an email address

<?php
// $ds is a valid link identifier for a directory server

// $mail is an email address provided by the user in a form

$base   = "o=My Company, c=US";
$filter = "(mail=".ldap_escape($mail, "", LDAP_ESCAPE_FILTER).")";

$sr = ldap_search($ds, $base, $filter, array("sn", "givenname", "mail"));

$info = ldap_get_entries($ds, $sr);

echo $info["count"]." entries returned\n";
?>