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I try to put data into WordPress cache and get it after reload page. I test my code and find out that data added to cache currently but after I reload page this cache is empty and wp_cache_get method return false.

How can i fix this?

<?php

    $cache_name = 'products';

    $wp_cache_get_products = wp_cache_get($cache_name);
    var_dump($wp_cache_get_products);


    if ($wp_cache_get_products == false) {

        $args = [
            'post_type'   => 'product',
            'post_status' => 'publish',
            'nopaging'    => true
        ];
        $product_list = new WP_Query($args);
        $posts = $product_list->get_posts();

        foreach ($posts as $post) {
            $output[] = [
                'id'    => $post->ID,
                'value' => $post->post_title,
                'url'   => get_permalink($post->ID),
                'image' => get_the_post_thumbnail_url($post->ID)
            ];


        }
        var_dump($output);
        wp_cache_set($cache_name, $output);
    }
    //echo json_encode($output);
    var_dump(wp_cache_get($cache_name));

?>

I try to put data into WordPress cache and get it after reload page. I test my code and find out that data added to cache currently but after I reload page this cache is empty and wp_cache_get method return false.

How can i fix this?

<?php

    $cache_name = 'products';

    $wp_cache_get_products = wp_cache_get($cache_name);
    var_dump($wp_cache_get_products);


    if ($wp_cache_get_products == false) {

        $args = [
            'post_type'   => 'product',
            'post_status' => 'publish',
            'nopaging'    => true
        ];
        $product_list = new WP_Query($args);
        $posts = $product_list->get_posts();

        foreach ($posts as $post) {
            $output[] = [
                'id'    => $post->ID,
                'value' => $post->post_title,
                'url'   => get_permalink($post->ID),
                'image' => get_the_post_thumbnail_url($post->ID)
            ];


        }
        var_dump($output);
        wp_cache_set($cache_name, $output);
    }
    //echo json_encode($output);
    var_dump(wp_cache_get($cache_name));

?>

本文标签： Why WordPress cache is not available after reload page

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