# Performance

Every wrapper has some overhead. We do our best to make this number as small as possible. One unique *Layout* or *Post Selection* on a page would only effect this by 0.01 seconds**\*** overhead compared to the usual way with coding. It’s impossible to notice these tiny numbers visually without testing it.

**\***This number was given by our tests, codes of the tests are provided below. Numbers can be different depending on your hosting opportunities. 

## Test of a Layout

{% code overflow="wrap" %}

```php
/**
 * Goal: check overhead of using the Advanced Views (shortcode) way comparing with the clear code way without any caching
 *
 * Test: Render of 4 post (1 post field + 4 ACF fields) for each way (clear code/shortcode)
 * (every way has its own posts and own ACF Group per each post, so there is totally no internal cache in the test)
 *
 * Result: overhead for one Layout is 9 MS (14 MS per post for the shortcode way VS 5 MS per post for the clear code way, 280%)
 * (55 MS for the shortcode way VS 20 MS for the clear code way. (55 MS - 20 MS) / 4 Layouts = 9 MS per Layout)
 */
add_shortcode('layout-test', function () {
    $shortcodePostIds = [1093, 2012, 2014, 2016,];
    $viewIds          = [895, 2087, 2088, 2089];
    $codePostIds      = [2170, 2172, 2174, 2176,];
    $shortcodeMarkup  = '';
    $codeMarkup       = '';

    $shortcodeStartTime = microtime(true);
    for ($i = 0; $i < 4; $i++) {
        $shortcodeMarkup .= do_shortcode(
            sprintf(
                '[acf-layout id="%s" object-id="%s"]',
                $viewIds[$i],
                $shortcodePostIds[$i]
            )
        );
    }
    $timeForShortcode     = microtime(true) - $shortcodeStartTime;
    $timeForShortcodeInMs = round($timeForShortcode * 1000);

    $codeStartTime = microtime(true);
    foreach ($codePostIds as $codePostId) {
        $postTitle = get_the_title($codePostId);
        // Text
        $description = get_field('description2', $codePostId);
        // Date Picker d/m/Y
        $year = get_field('year2', $codePostId);
        // Wysiwyg Editor
        $longDescription = get_field('long_description2', $codePostId);
        // Number
        $price = get_field('price2', $codePostId);

        $codeMarkup .= '<div class="acf-view acf-view--id--895 acf-view--object-id--{object-id}">';

        $codeMarkup .= '<div class="acf-view__row _post_title">';
        $codeMarkup .= sprintf('<div class="acf-view__field">%s</div>', $postTitle);
        $codeMarkup .= '</div>';

        $codeMarkup .= '<div class="acf-view__row description">';
        $codeMarkup .= sprintf('<div class="acf-view__field">%s</div>', $description);
        $codeMarkup .= '</div>';

        $codeMarkup .= '<div class="acf-view__row year">';
        $codeMarkup .= sprintf('<div class="acf-view__field">%s</div>', $year);
        $codeMarkup .= '</div>';

        $codeMarkup .= '<div class="acf-view__row long_description">';
        $codeMarkup .= sprintf('<div class="acf-view__field">%s</div>', $longDescription);
        $codeMarkup .= '</div>';

        $codeMarkup .= '<div class="acf-view__row price">';
        $codeMarkup .= sprintf('<div class="acf-view__field">%s</div>', $price);
        $codeMarkup .= '</div>';


        $codeMarkup .= '</div>';
    }
    $timeForCode     = microtime(true) - $codeStartTime;
    $timeForCodeInMs = round($timeForCode * 1000);

    $overheadForOneViewInMs          = round((($timeForShortcode / 4) - ($timeForCode / 4)) * 1000);
    $overheadForOneViewInPercentages = round((($timeForShortcode / 4) / ($timeForCode / 4)) * 100);

    return $codeMarkup . sprintf('<h3>Time for 4 posts with code in ms: %s</h3>', $timeForCodeInMs)
           . $shortcodeMarkup . sprintf('<h3>Time for 4 posts with shortcode in ms: %s</h3>', $timeForShortcodeInMs)
           . sprintf('<h3>Overhead for one Layout in ms: %s</h3>', $overheadForOneViewInMs)
           . sprintf('<h3>Overhead for one Layout in percentages: %s</h3>', $overheadForOneViewInPercentages);
});
```

{% endcode %}

## Test of a Post Selection

{% code overflow="wrap" %}

```php
/**
 * Goal: check overhead of using the Advanced Views Post Selection (shortcode) way comparing with the clear code way
 *
 * Test: Query and render 4 post (1 post field + 4 ACF fields) for each way (clear code/shortcode)
 * (every way has its own posts and own ACF Group per each post, so there is no internal WP/ACF cache in the test)
 *
 * Result: overhead for one Post Selection is 10 MS (147%)
 * (31 MS for the shortcode way VS 21 MS for the clear code way. 31 MS - 21 MS = 10 MS)
 *
 * Note : Though Post Selection uses a Layout to render, common overhead is much lower than the Layout's overhead * amount of posts in the results,
 * because our plugin has internal cache and the Layout's data & markup is cached.
 * It means work by markup creation is done only once regardless of count of posts in Post Selection results.
 */
add_shortcode('post-selection-test', function () {
    $shortcodeMarkup = '';
    $codeMarkup      = '';

    $shortcodeStartTime   = microtime(true);
    $shortcodeMarkup      .= do_shortcode(' [acf-post-selection id="1129"]');
    $timeForShortcode     = microtime(true) - $shortcodeStartTime;
    $timeForShortcodeInMs = round($timeForShortcode * 1000);

    $codeStartTime = microtime(true);
    $queryArgs     = [
        'post_type'      => 'page',
        'post_status'    => 'publish',
        'posts_per_page' => 4,
        'order'          => 'ASC',
        'orderby'        => 'none',
        'post__in'       => [
            2170,
            2172,
            2174,
            2176
        ]
    ];
    $query         = new \WP_Query($queryArgs);
    $codePostIds   = $query->get_posts();
    foreach ($codePostIds as $codePostId) {
        $postTitle = get_the_title($codePostId);
        // Text
        $description = get_field('description2', $codePostId);
        // Date Picker d/m/Y
        $year = get_field('year2', $codePostId);
        // Wysiwyg Editor
        $longDescription = get_field('long_description2', $codePostId);
        // Number
        $price = get_field('price2', $codePostId);

        $codeMarkup .= '<div class="acf-view acf-view--id--895 acf-view--object-id--{object-id}">';

        $codeMarkup .= '<div class="acf-view__row _post_title">';
        $codeMarkup .= sprintf('<div class="acf-view__field">%s</div>', $postTitle);
        $codeMarkup .= '</div>';

        $codeMarkup .= '<div class="acf-view__row description">';
        $codeMarkup .= sprintf('<div class="acf-view__field">%s</div>', $description);
        $codeMarkup .= '</div>';

        $codeMarkup .= '<div class="acf-view__row year">';
        $codeMarkup .= sprintf('<div class="acf-view__field">%s</div>', $year);
        $codeMarkup .= '</div>';

        $codeMarkup .= '<div class="acf-view__row long_description">';
        $codeMarkup .= sprintf('<div class="acf-view__field">%s</div>', $longDescription);
        $codeMarkup .= '</div>';

        $codeMarkup .= '<div class="acf-view__row price">';
        $codeMarkup .= sprintf('<div class="acf-view__field">%s</div>', $price);
        $codeMarkup .= '</div>';


        $codeMarkup .= '</div>';
    }
    $timeForCode     = microtime(true) - $codeStartTime;
    $timeForCodeInMs = round($timeForCode * 1000);

    $overheadForOneCardInMs          = round(($timeForShortcode - $timeForCode) * 1000);
    $overheadForOneCardInPercentages = round(($timeForShortcode / $timeForCode) * 100);

    return $codeMarkup . sprintf('<h3>Time for query & display 4 posts with code in ms: %s</h3>', $timeForCodeInMs)
           . $shortcodeMarkup . sprintf(
               '<h3>Time for query & display 4 posts with shortcode in ms: %s</h3>',
               $timeForShortcodeInMs
           )
           . sprintf('<h3>Overhead for one Post Selection in ms: %s</h3>', $overheadForOneCardInMs)
           . sprintf('<h3>Overhead for one Post Selection in percentages: %s</h3>', $overheadForOneCardInPercentages);
});
```

{% endcode %}


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