master/input_2search_8php_source.html

 <?php
 $vars['class'] = elgg_extract_class($vars, 'elgg-input-search');

 $defaults = [
     'type' => 'search'
 ];

 $vars = array_merge($defaults, $vars);

 echo elgg_view('input/text', $vars);
elgg_view
elgg_view(string $view, array $vars=[], string $viewtype= '')
Return a parsed view.
Definition: views.php:156

elgg_extract_class
elgg_extract_class(array $array, array|string $existing=[], string $extract_key= 'class')
Extract class names from an array, optionally merging into a preexisting set.
Definition: elgglib.php:277

$vars
$vars['class']
Elgg search input Displays a search input field.
Definition: search.php:7

$defaults
$defaults
Definition: search.php:9