What is the significance of the error message "Operations error" in PHP LDAP search?

The "Operations error" in PHP LDAP search typically indicates that there was an issue with the operation being performed, such as an invalid search filter or incorrect parameters. To solve this issue, ensure that the search filter and parameters are correctly formatted and valid.

// LDAP connection
$ldapconn = ldap_connect("ldap.example.com");

// Bind to LDAP directory
$ldapbind = ldap_bind($ldapconn, "cn=admin,dc=example,dc=com", "password");

// Search filter
$filter = "(cn=John Doe)";

// Perform LDAP search
$result = ldap_search($ldapconn, "dc=example,dc=com", $filter);

if($result) {
    $entries = ldap_get_entries($ldapconn, $result);
    // Process search results
} else {
    echo "Error: " . ldap_error($ldapconn);
}

// Close LDAP connection
ldap_close($ldapconn);