PHP獲取數據從數據庫

Question

我試圖從主題標籤讀取數據，其中爲＃A2或#ar包括hashtag但不是我的代碼工作

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

Answer 1

試試這個，

$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

你也可以使用你的方法做到這一點，但你只需要將#a2用引號括起來

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

希望它可以幫助