(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)
ldap_get_option — Get the current value for given option
   Sets value to the value of the specified option.
  
ldapAn LDAP\Connection instance, returned by ldap_connect().
option
       The parameter option can be one of:
       
valueThis will be set to the option value.
| Version | Description | 
|---|---|
| 8.1.0 | The ldapparameter expects an LDAP\Connection
  instance now; previously, a validldap linkresource was expected. | 
Example #1 Check protocol version
<?php
// $ds is a valid LDAP\Connection instance for a directory server
if (ldap_get_option($ds, LDAP_OPT_PROTOCOL_VERSION, $version)) {
    echo "Using protocol version $version\n";
} else {
    echo "Unable to determine protocol version\n";
}
?>Note:
This function is only available when using OpenLDAP 2.x.x OR Netscape Directory SDK x.x.