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Anyone good with UPDATE statements?


MjM8082

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Need help with this UPDATE statement...

 

This is my code right now for my form. I run this in my Web Browser and fill out the form but the information still wont carry over to the database.

 

Here is my code...

 

<html>
<head>
<title>Update User</title>
</head>
<body>
<form method="post" action="update_user2.php">
<?php
$dbc = mysqli_connect('localhost', 'se266_user', 'pwd', 'se266') 
	or die(mysql_error());
//delete users
echo '<b>Delete or Update User</b>.<br />';
if (isset($_POST['remove']))
{          
	foreach($_POST['delete'] as $delete_id)
	{             
		$query = "DELETE FROM users WHERE course_id = $delete_id";             
		mysqli_query($dbc, $query) or die ('can\'t delete course');          
	}        
	echo 'user has been deleted.<br />';   
}

		if (isset($_POST['update']))
{          
	foreach($_POST['update'] as $update_id)
	{             
		$course_id 	= $_POST['course_id'];
		$course_name = $_POST['course_name'];
		$student_id = $_POST['student_id'];

		$query = "UPDATE users SET course_name = $course_name WHERE course_id = $course_id";             
		mysqli_query($dbc, $query) or die ('can\'t update course');     

		$update_count = $db->exec($query);

	}				
	echo 'course has been updated.<br />';   
}


//display users info with checkbox to delete  
$query = "SELECT * FROM users";  
$result = mysqli_query($dbc, $query);  
while($row = mysqli_fetch_array($result))
{      
	echo '<input type="checkbox" value="' .$row['course_id'] . '" name="delete[]" />'; 
	echo ' ' .$row['course_name'] .' '. $row['student_id'];
	echo '<br />';  
}
mysqli_close($dbc);

?>	
<input type="submit" name="remove" value="Remove" />
<input type="submit" name="update" value="Update" />
<br>
<br>
<form method="POST" action="update_user2.php">		
<label for="course_id">Course ID:</label> 
<input type="text" id="course_id" name="course_id" /><br />		
<label for="course_name">Course Name:</label>
<input type="text" id="course_name" name="course_name" /><br />

<label for="course_name">Student ID:</label>

<input type="text" id="student_id" name="student_id" /><br />		



</form>
</body>
</html>

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