file_validate
Definition
file_validate(&$file, $validators = array())
drupal/includes/file.inc, line 937
Description
Check that a file meets the criteria specified by the validators.
After executing the validator callbacks specified hook_file_validate() will also be called to allow other modules to report errors about the file.
@see hook_file_validate()
Parameters
$file A Drupal file object.
$validators An optional, associative array of callback functions used to validate the file. The keys are function names and the values arrays of callback parameters which will be passed in after the user and file objects. The functions should return an array of error messages, an empty array indicates that the file passed validation. The functions will be called in the order specified.
Return value
An array contaning validation error messages.
Related topics
Name | Description |
|---|---|
| File interface | Common file handling functions. |
Code
function file_validate(&$file, $validators = array()) {
// Call the validation functions specified by this function's caller.
$errors = array();
foreach ($validators as $function => $args) {
array_unshift($args, $file);
$errors = array_merge($errors, call_user_func_array($function, $args));
}
// Let other modules perform validation on the new file.
return array_merge($errors, module_invoke_all('file_validate', $file));
}