1.9/default_2input_2submit_8php_source.html

 <?php
 $vars['type'] = 'submit';
 $vars['class'] = elgg_extract('class', $vars, 'elgg-button-submit');

 echo elgg_view('input/button', $vars);
elgg_extract
elgg_extract($key, array $array, $default=null, $strict=true)
Checks for $array[$key] and returns its value if it exists, else returns $default.
Definition: elgglib.php:1464

$vars
$vars['type']
Definition: submit.php:11

echo
elgg echo
Translates a string.
Definition: languages.js:43

elgg_view
elgg_view($view, $vars=array(), $bypass=false, $ignored=false, $viewtype= '')
Return a parsed view.
Definition: views.php:354