I have here a SQL query to get course information from the data base. The variable courses
is an array saved by Session from the previous page. Here is what courses[]
looks like if I var_dump it. I have selected 3 courses to be put into the session.
array(3)
{
[0]=> string(7) "CAD8405"
[1]=> string(7) "CON8413"
[2]=> string(7) "ENG8328"
}
My $selectedYear
variable varies between 2012 to 2014. The is also saved by session. Below is where I have the problem. My query is fine, there is no need to check that. I cannot get $courseCode
to show up as my Course.CourseCode='$courseCode'
, therefore my query doesn't work.
This is what I found to be where it gets kinda confusing. The $courses
array returns a normal array. but when I do $courses[0] = $courseCode;
then var_dump($courseCode) = null
This is what leads me to believe that data I need as my course ID's are the keys to the $courses[]
array. When trying to access the $courses[1]
, the code thinks its a multidimensional array with the key as the first data. But I could be wrong
Is there better way to extract the key of my array?
for($i = 0; $i < count($courses); $i++)
{
//$courses[$i] = $courseCode;
$courseCode = $courses[$i];
$comfirmationString = "SELECT Course.CourseCode, Course.Title, Course.WeeklyHours, Semester.SemesterCode FROM Course, Semester, CourseOffer
WHERE Semester.YearNum='$selectedYear' AND Course.CourseCode='$courseCode'
AND Course.CourseCode=CourseOffer.CourseCode AND Semester.SemesterCode=CourseOffer.SemesterCode";
if($comfirmationResult = mysqli_query($link, $comfirmationString))
{
while($row = mysqli_fetch_assoc($comfirmationResult))
{
echo "<tr><td>$row[CourseCode]</td><td>$row[Title]</td><td>$row[WeeklyHours]</td><td>$row[SemesterCode]</td></tr>";
}
}
else
{
echo "<p>Query error: " + mysqli_error($link) + "</p>";
}
}
Below is the code to show how I have saved the $courses[]
variable: I get the results of a query, and if the check box is checked, this courseID gets thrown into the courses[]
array.
if($Result2013 = mysqli_query($link, $string2013))
{
echo "<form action='CourseSelection.php' method='get'>
<table><tr><th>Code</th><th>Course Title</th><th>Hours</th><th>Term</th><th>Select</th></tr>";
while($row2013 = mysqli_fetch_assoc($Result2013))
{
echo "<tr><td>$row2013[CourseCode]</td><td>$row2013[Title]</td><td>$row2013[WeeklyHours]</td>
<td>$row2013[Term]</td><td><input type='checkbox' name='courses[]' value=$row2013[CourseCode]></td></tr>";
}
echo "</table>";
}