theme_get_function

Versions
4.7 – 5: theme_get_function($function)

Determine if a theme function exists, and if so return which one was found.

Parameters

$function The name of the theme function to test.

Return value

The name of the theme function that should be used, or false if no function exists.

▸ 2 functions call theme_get_function()

▾ 2 functions call theme_get_function()

drupal_get_form in includes/form.inc: Processes a form array and produces the HTML output of a form. If there is input in the $_POST['edit'] variable, this function will attempt to validate it, using drupal_validate_form(), and then submit the form using drupal_submit_form().
theme in includes/theme.inc: Generate the themed representation of a Drupal object.

Code

includes/theme.inc, line 177

<?php
function theme_get_function($function) {
  global $theme, $theme_engine;

  // Because theme() is called a lot, calling init_theme() only to have it
  // smartly return is a noticeable performance hit.   Don't do it.
  if (!isset($theme)) {
    init_theme();
  }

  if (($theme != '') && function_exists($theme .'_'. $function)) {
    // call theme function
    return $theme .'_'. $function;
  }
  elseif (($theme != '') && isset($theme_engine) && function_exists($theme_engine .'_'. $function)) {
    // call engine function
    return $theme_engine .'_'. $function;
  }
  elseif (function_exists('theme_'. $function)){
    // call Drupal function
    return 'theme_'. $function;
  }
  return false;
}
?>