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I have a problem, that my code runs correctly, insert data to database, but the success message after lastInsertId is not working.

Please help.

What I have tried:

      	$date = date('Y-m-d');
		$teacherid = $_SESSION['teacherid'];
		$teachername = $_SESSION['fullname'];
		$sql = "INSERT INTO homework (class,subject,lesson,topic,`date`,teacherid,teachername) VALUES(:class,:subject,:lesson,:topic,:date2,:teacherid,:teachername)";
		$lastInsertId = $conn->lastInsertId();
			echo "<script language='text/javascript'>alert('Home work submitted successfully');</script>";
			echo "<script type='text/javascript'> document.location = 'index.php'; </script>";
Updated 15-Oct-20 10:17am
Richard MacCutchan 15-Oct-20 10:35am    
What is the value returned by $conn->lastInsertId() and put in $lastInsertId when this code runs?
nyt1972 15-Oct-20 11:44am     CRLF
I tried this and its not executing even. $lastInsertId = $conn->lastInsertId(); echo "". $lastInsertId ."";
Richard MacCutchan 15-Oct-20 11:54am    
That does not sound correct. You will need to do some debugging to find out what is happening.
nyt1972 15-Oct-20 12:02pm    
In debug its executing the lines, but not alerting the message.

1 solution

lastInsertId() is a method that applies to a PDO object, not a connection...
check the documentation!

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