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>ldap_compare</H1
><DIV
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></A
><P
> (PHP 4 >= 4.0.2)</P
>ldap_compare -- Compare value of attribute found in entry specified with DN</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN33490"
></A
><H2
>Description</H2
>bool <B
CLASS="methodname"
>ldap_compare</B
> ( resource link_identifier, string dn, string attribute, string value)<BR
></BR
><P
> Returns <TT
CLASS="constant"
><B
>TRUE</B
></TT
> if <TT
CLASS="parameter"
><I
>value</I
></TT
> matches otherwise returns <TT
CLASS="constant"
><B
>FALSE</B
></TT
>. Returns -1 on error.
</P
><P
> <B
CLASS="function"
>ldap_compare()</B
> is used to compare <TT
CLASS="parameter"
><I
>value</I
></TT
>
of <TT
CLASS="parameter"
><I
>attribute</I
></TT
> to value of same attribute in LDAP directory
entry specified with <TT
CLASS="parameter"
><I
>dn</I
></TT
>.
</P
><P
> The following example demonstrates how to check whether or not given password matches
the one defined in DN specified entry.
</P
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><P
><B
>Ejemplo 1. Complete example of password check</B
></P
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><PRE
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><?php
$ds=ldap_connect("localhost"); // assuming the LDAP server is on this host
if ($ds) {
// bind
if(ldap_bind($ds)) {
// prepare data
$dn = "cn=Matti Meikku, ou=My Unit, o=My Company, c=FI";
$value = "secretpassword";
$attr = "password";
// compare value
$r=ldap_compare($ds, $dn, $attr, $value);
if ($r === -1) {
echo "Error: ".ldap_error($ds);
} elseif ($r === TRUE) {
echo "Password correct.";
} elseif ($r === FALSE) {
echo "Wrong guess! Password incorrect.";
}
} else {
echo "Unable to bind to LDAP server.";
}
ldap_close($ds);
} else {
echo "Unable to connect to LDAP server.";
}
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>Aviso</B
></TD
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><TR
><TD
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><P
> <B
CLASS="function"
>ldap_compare()</B
> can NOT be used to compare BINARY values!
</P
></TD
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></DIV
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>
This function was added in 4.0.2.
</P
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