PHP從數據庫中獲取數據

Question

我正在嘗試從hashtag中獲取數據，其中＃a2或#ar hashtag但不能使用我的代碼

$sql_query = mysqli_query($conn, "SELECT * FROM posts WHERE hashtag=#a2");

Answer 1

嘗試這個，

$data = "#a2";
$sql_query = mysqli_query($conn, "SELECT * FROM posts WHERE hashtag LIKE '%$data%'");

Answer 2

$sql_query = mysqli_query($conn, "SELECT * FROM posts WHERE hashtag LIKE '%#a2%'");

Answer 3

您也可以使用您的方法來執行此操作，但您只需將#a2括在引號中即可

$sql_query = mysqli_query($conn, "SELECT * FROM posts WHERE hashtag='#a2'");

希望能幫助到你