如何显示wordpress数据库中的产品图片

Question

我想要显示来自wordpress mysql数据库的woocommerce产品图像。例如，如果一个产品的id为11，其图像、属性、价格等都存储在数据库的wp-postmeta表中。图像存储在其他id中，id值在产品10的图像中给出。现在如何从表中获取图像。

对于单个产品，

    $img = mysql_query("SELECT meta_value FROM wp_postmeta WHERE meta_key ='_thumbnail_id' AND post_id='11'",$con);
    $res= mysql_fetch_array($img);
    $img2 = mysql_query("SELECT meta_value FROM wp_postmeta WHERE meta_key ='_wp_attached_file' AND post_id='".$res['meta_value']."'",$con);
    $res2= mysql_fetch_array($img2);
    echo $res2['metavalue'];

显示单个产品的图像，但是如何从mysql数据库中获取多个产品的数据？

Answer 1

我做了这样的东西来获取所有woocommerce产品的图像

$query = "SELECT * FROM wp_posts WHERE post_status = 'publish' AND post_type LIKE 'product%'";

if ($result = $mysqli->query($query)) {
    printf("<br>Select returned %d rows.\n", $result->num_rows);
    echo "<table>";
    echo "<thead>";
    echo "<tr>";
    echo "<td>ID</td><td>Termék neve</td><td>Termék linkje</td><td>Termék kép</td>";
    echo "</tr>"; 
    echo "<thead>";
    while ($row = $result->fetch_assoc()) {
        $post_id = $row["ID"];

        echo "<tr>";
        echo "<td>".$post_id."</td>";
        echo "<td>".$row["post_title"]."</td>";
        echo "<td>".$row["guid"]."</td>";
        $query_img = "SELECT meta_value FROM wp_postmeta WHERE meta_key ='_thumbnail_id' AND post_id = $post_id";
        $result_img = $mysqli->query($query_img);
        $img = $result_img -> fetch_assoc();
        $query_img_2 = "SELECT meta_value FROM wp_postmeta WHERE meta_key ='_wp_attached_file' AND post_id = ".$img['meta_value']."";
        $result_img_2 = $mysqli->query($query_img_2);
        $img_2 = $result_img_2 -> fetch_assoc();
        echo "<td>".$img_2["meta_value"]."</td>";
        echo "</tr>";
    }       
    echo "</table>";

    /* free result set */
    $result->close();
}

Answer 2

使用此插件https://wordpress.org/plugins/get-the-image/

这会对你有很大帮助。