This is one of the way to alter the error message in any of the forms.
In my example I have added a custom validate to validate the user login functinality.
1. filter out validation
In my example I have added a custom validate to validate the user login functinality.
1. filter out validation
<?php/**
* Custom Form Validation.
* Removes all form validation errors caused by a 'foo][bar' form element.
*/function my_module_form_validate($form, &$form_state) {
$errors = form_get_errors();
if ($errors) {
// Clear errors.
form_clear_error();
// Clear error messages.
$error_messages = drupal_get_messages('error');
// Initialize an array where removed error messages are stored.
$removed_messages = array();
// Remove all errors originated by the 'foo][bar' element.
foreach ($errors as $name => $error_message) {
if ($name == 'foo][bar') {
$removed_messages[] = $error_message;
unset($errors[$name]);
}
}
// Reinstate remaining errors.
foreach ($errors as $name => $error) {
form_set_error($name, $error);
// form_set_error() calls drupal_set_message(), so we have to filter out
// these from the error messages as well.
$removed_messages[] = $error;
}
// Reinstate remaining error messages (which, at this point, are messages that
// were originated outside of the validation process).
foreach (array_diff($error_messages['error'], $removed_messages) as $message) {
drupal_set_message($message, 'error');
}
}
}?> 2. To modify the error message : in the above code replace this code // Remove all errors originated by the 'foo][bar' element.
foreach ($errors as $name => $error_message) {
if ($name == 'foo][bar') {
$removed_messages[] = $error_message;
unset($errors[$name]);
}
} with this one
// Remove all errors originated by the 'foo][bar' element. used this in user form alter custom validation
foreach ($errors as $name => $error_message) {
if ($name == 'name') {
$errors[$name] = "<p>We can't find a user with that email.";
$removed_messages[] = $error_message;
// unset($errors[$name]);
}
} This will replace the default error message "Sorry, Unrecognized username and password with the above text Reference link : https://api.drupal.org/comment/28464#comment-28464 