如何设置mysql查询变量？

Question

我有什么：

$table_name_arcticles = 'arcticles';
$arcticles_count = mysqli_query($connection, "SELECT * FROM `articles` WHERE `categories_id` ="  . $data['id']);

我需要什么，像这样：

$table_name_arcticles = 'arcticles';
$arcticles_count = mysqli_query($connection, "SELECT * FROM $table_name_arcticles WHERE `categories_id` ="  . $data['id']);

Answer 1

使用此...

$table_name_arcticles = 'arcticles';
$query="SELECT * FROM ".$table_name_arcticles." WHERE `categories_id` ="  . $data['id'];
$arcticles_count = mysqli_query($connection,$query);