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Definition

drupal_validate_form($form_id, $form)
drupal/includes/form.inc, line 382

Description

Validates user-submitted form data from a global variable using the validate functions defined in a structured form array.

Parameters

$form_id A unique string identifying the form for validation, submission, theming, and hook_form_alter functions.

$form An associative array containing the structure of the form.

Related topics

Name	Description
Form generation	Functions to enable the processing and display of HTML forms.

Code

function drupal_validate_form($form_id, $form) {
  global $form_values;
  static $validated_forms = array();

  if (isset($validated_forms[$form_id])) {
    return;
  }

  // If the session token was set by drupal_prepare_form(), ensure that it
  // matches the current user's session.
  if (isset($form['#token'])) {
    if (!drupal_valid_token($form_values['form_token'], $form['#token'])) {
      // Setting this error will cause the form to fail validation.
      form_set_error('form_token', t('Validation error, please try again. If this error persists, please contact the site administrator.'));
    }
  }

  _form_validate($form, $form_id);
  $validated_forms[$form_id] = TRUE;
}