MySQL查詢錯誤 「警告：mysqli_fetch_array（）預計參數1被mysqli_result，布爾給」

Question

我有這個錯誤

Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '00:00:00 AND 2013-08-01 23:59:59 ORDER BY date' at line 1 

與此查詢

$start_date = date("Y-m-d ") . "00:00:00"; 
$end_date = date("Y-m-d ") . "23:59:59"; 

$result = mysqli_query($con,"SELECT * FROM taxi WHERE del IS NULL AND date BETWEEN " . $start_date . " AND " . $end_date . " ORDER BY date"); 

，我不知道關於它可能是什麼，因爲我試圖在phpmyadmin查詢，它工作正常。任何人都能理解爲什麼

Answer 1

嘗試把單引號的日期周圍：

$result = mysqli_query($con,"SELECT * FROM taxi WHERE del IS NULL 
AND date BETWEEN '" . $start_date . "' AND '" . $end_date . "' ORDER BY date"); 

也可以考慮使用預處理語句，以避免行情都在一起。 http://php.net/manual/en/mysqli.quickstart.prepared-statements.php