function element_validate_number
element_validate_number($element, &$form_state)
Form element validation handler for number elements.
Related topics
File
- includes/form.inc, line 4394
- Functions for form and batch generation and processing.
Code
function element_validate_number($element, &$form_state) { $value = $element['#value']; if ($value != '' && !is_numeric($value)) { form_error($element, t('%name must be a number.', array('%name' => $element['#title']))); } }
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https://api.drupal.org/api/drupal/includes!form.inc/function/element_validate_number/7.x