Level 73
Then remove the ++ from this line.
<h3><em>att<?php echo $_SESSION['attnum']++ ?>: </em></h3>
Jan 10, 2021
8
Level 6
PHP session : do not increment the session every time I refresh the page
I created this code that increments the session variable every time I click on the button. I just don't want it to increment every time I refresh the page:
<?php
session_start();
// Page was not reloaded via a button press
if (!isset($_POST['add'])) {
$_SESSION['attnum'] = 0; // Reset counter
}
?>
<form method='post'>
<input name='add' type="submit" value='+'>
<h3><em>att<?php echo $_SESSION['attnum']++ ?>: </em></h3>
</form>
how can i set the session to increment only when i click on the button and not to increment when i refresh?
Level 6
so it doesn't increment me anymore when I click on the button @tray2
Level 73
That is because you need to hit an endpoint on the server to do it. What you did before when you hit the button was a page refresh.
You need to connect your button to an ajax request and when it hits the server you increment the session value.
Level 6
could you help me in this operation? if an example were possible? many thanks @tray2
Level 73
What is it that you are trying to achieve?
In what context are you going to use it?
Level 6
I'm trying to get a variable increment if and only if I press the button. I'll need that variable to iterate through an array @tray2
Level 73
You know that you can use foreach to do that or even a for loop since you can get the number of items in the array by using count.
foreach($yourArray as $value) {
// use the $value for something
}
for( $i = 0; $i < count($yourArray); $i++) {
use $youraArray[$i] for something.
}
So there isn't any need to store a number for that.
Level 24
only modify $_SESSION['attnum'] when you click on submit button, so
<h3><em>att<?php echo $_SESSION['attnum'] ?>: </em></h3>
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