radio.php

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<?php
$defaults = [
    'align' => 'vertical',
    'value' => [],
    'disabled' => false,
    'options' => [],
    'name' => '',
    'type' => 'radio',
];

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

$options_values = elgg_extract('options_values', $vars, []);
unset($vars['options_values']);

$input_options = [];

foreach ($options_values as $key => $value) {
    if (is_array($value)) {
        $key = elgg_extract('text', $value, $key);
    } else {
        $value = [
            'text' => $value,
            'value' => $key,
        ];
    }
    
    $input_options[$key] = $value;
}

// turn options into options_values
$options = elgg_extract('options', $vars);
unset($vars['options']);
if (!empty($options) && empty($input_options)) {
    foreach ($options as $label => $value) {
        $input_options[$label] = ['value' => $value];
    }
}

if (empty($input_options)) {
    return;
}

$id = elgg_extract('id', $vars, '');
unset($vars['id']);

$list_class = elgg_extract_class($vars, ['elgg-input-radios', "elgg-{$vars['align']}"]);

unset($vars['class']);
unset($vars['align']);

$vars['class'] = 'elgg-input-radio';

if (is_array(elgg_extract('value', $vars))) {
    $selected_value = array_map('elgg_strtolower', elgg_extract('value', $vars));
} else {
    $selected_value = [elgg_strtolower((string) elgg_extract('value', $vars))];
}

unset($vars['value']);

$radios = '';
foreach ($input_options as $label => $option) {
    $radio_input_options = array_merge($vars, $option);
    $radio_input_options['checked'] = in_array(elgg_strtolower((string) elgg_extract('value', $option)), $selected_value);

    $label = elgg_extract('text', $radio_input_options, $label);
    unset($radio_input_options['text']);
    
    $radio = elgg_format_element('input', $radio_input_options);
    $radios .= "<li><label>{$radio}{$label}</label></li>";
}

echo elgg_format_element('ul', [
    'class' => $list_class,
    'id' => $id,
], $radios);