How preserve my inputs values each time that I refresh my page? - php

Question

I want to enter a name and a mark. As the mark entered is less or equal to 100, the names and marks entered is to be stored in an associative array when I click the submit button and it should request me to enter another name and marks. But if I enter a mark greater than 100 discarding the name entered, when I click the submit button, the php script should display me all the names and marks previously entered. Here what I have done but I am not getting the desired results. Please help. My code:
<?php
if(isset($_POST['lname']) && isset($_POST['marks'])){
$name = $_POST['lname'];
$marks = $_POST['marks'];
$lists = array($name => $marks);
foreach($lists as $name => $marks){
echo $name . '<br>';
echo $marks;
}
}
?>
<form action = "<?php echo $_SERVER['PHP_SELF'];?>" method = "POST">
Name:<br>
<input type = "text" name = "lname"><br><br>
Marks:<br>
<input type = "text" name = "marks"><br><br>
<input type = "submit" value = "Submit">
</form>

Answer 1

You can use session to achieve what you want, see this code:
<?php
session_start();
if(isset($_POST['lname']) && isset($_POST['marks'])){
if($_POST['marks'] > 100) {
$_SESSION['info'][] = array($_POST['lname'] => $_POST['marks']);
}
}
if(isset($_SESSION['info'])) {
for($i = 0; $i < count($_SESSION['info']); $i++) {
foreach($_SESSION['info'][$i] as $name => $marks){
echo '<p>' . $name . '<br>';
echo $marks . '</p>';
}
}
}
?>
<form action = "<?php echo $_SERVER['PHP_SELF'];?>" method = "POST">
Name:<br>
<input type = "text" name = "lname"><br><br>
Marks:<br>
<input type = "text" name = "marks"><br><br>
<input type = "submit" value = "Submit">
</form>
You should read some docs about session:
http://php.net/manual/en/intro.session.php

Answer 2

You are posting name and your server side is looking for lname