Can someone help me with these warnings? Code Below. //HW_Form_3.php <h1>Michael
ID: 3805203 • Letter: C
Question
Can someone help me with these warnings? Code Below.
//HW_Form_3.php
<h1>Michael McCann Hw 3</h1>
<h2>Student Grades</h2>
<form method="post" action="HW_Process_3.php">
<table>
<html>
<head>
<title></title>
</head>
<body>
<?php
$hw3data_handle = fopen("hw3data.txt", "r");
$hw3data_array = array();
if($hw3data_handle) {
while(($line = fgets($hw3data_handle)) != false) {
array_push($hw3data_array, explode(" ", $line));
}
}
echo "<form action = 'hw3_process.php' method = 'POST'>";
echo "<table align = 'left'>";
echo "<tr><th>Student Name</th><th>Student ID</th><th>Grade</th></tr>";
$grade_combo = "<option value = 'None'>None</option>
<option value = 'A+'>A+</option>
<option value = 'A'>A</option>
<option value = 'A-'>A-</option>
<option value = 'B+'>B+</option>
<option value = 'B'>B</option>
<option value = 'B-'>B-</option>
<option value = 'C+'>C+</option>
<option value = 'C'>C</option>
<option value = 'C-'>C-</option>
<option value = 'D+'>D+</option>
<option value = 'D'>D</option>
<option value = 'D-'>D-</option>
<option value = 'F'>F</option>";
foreach($hw3data_array as $student) {
echo "<tr><td>" . $student[0] . ", " . $student[1] . "</td><td>" . $student[2] . "</td><td>" . "<select name = '" . $student[0] . "_" . $student[1] . "_grade' id = '" . $student[0] . "_" . $student[1] . "_grade' size = '1'>" . $grade_combo . "</select></td></tr>";
}
echo "<tr><td><input type = 'submit' name = 'Submit' align = 'center'/></td>";
echo "<td><input type = 'reset' name = 'Reset' align = 'center'/></td></tr>";
echo "</table>";
echo "</form>";
?>
</body>
</html>
</form>
//HW_Process_3.php
<?php
if(isset($_SESSION['data_array'])) {
$students_data = $_SESSION['data_array'];
}
echo "<table align = 'left'>";
echo "<tr><th>Student Name</th><th>Student ID</th><th>Grade</th></tr>";
foreach($students_data as $student) {
echo "<tr><td>" . $student[0] . ", " . $student[1] . "</td><td>" . $student[1] . "</td><td>" . $_POST[$student[0] . "_" . $student[1] . "_grade"] . "</td></tr>";
array_pushs($student, $_POST[$student[0] . "_" . $student[1] . "_grade"]);
}
echo "</table>";
$grade_count = array("A+" => 0, "A" => 0, "A-" => 0, "B+" => 0, "B" => 0, "B-" => 0, "C+" => 0, "C" => 0, "C-" => 0, "D+" => 0, "D" => 0, "D-" => 0, "F" => 0, "None" => 0);
foreach($students_data as $student) {
$grade_count[$_POST[$student[0] . "_" . $student[1] . "_grade"]] += 1;
}
echo "<br /><br />";
echo "<table align = 'left' />";
echo "<tr><th>Grade</th><th>Count</th></tr>";
foreach($grade_count as $grade => $count) {
echo "<tr><td>" . $grade . "</td><td>" . $count . "</td></tr>";
}
echo "</table>";
?>
</body>
</html>
Explanation / Answer
please upload your text file too
There is a problem with the session array
$students_data is given inside if as well as there is no value in your session array. To know that please print and check wether your session array has value or empty.To know that just add the code print_r($_SESSION['data_array']);
exit.
please upload your full code including text file so that i can help you
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