Question

How can I say in/with the follow (see below) function that you can make max 3 items? And if you will make more than three items the function will stop and you get a warning?

function addSection() {
global $compid;
    $sectionOb = new Item();
    $sectionOb->i_id_pk = $sectionOb->newId();
    $sectionOb->i_mod_comp_id_fk = $compid;
    $sectionOb->c_titel = '';
    $sectionOb->c_content = '';
    $sectionOb->i_sort = $sectionOb->newSort($compid);
    $sectionOb->insert();
}

---

if($action == 'add') {  
    addSection();
}


<a href="<?php echo $_SERVER['REQUEST_URI'] ?>&amp;action=add" />new section</a>

Answer 1

If you are not too concerned about URL spoofing, I would add a counter variable in the URL which is passed to the addSection() method like so:

function addSection($count) {
    if ($count >= 3) { return $count; }
    global $compid;
    $sectionOb = new Item();
    $sectionOb->i_id_pk = $sectionOb->newId();
    $sectionOb->i_mod_comp_id_fk = $compid;
    $sectionOb->c_titel = '';
    $sectionOb->c_content = '';
    $sectionOb->i_sort = $sectionOb->newSort($compid);
    $sectionOb->insert();

    // Return incremented count
    return $count + 1;
}

---

// Retrieve the last count from the URL
$count = isset($_GET['count']) ? intval($_GET['count']) : 0;

// Increment the count if the action is add and the addSection method suceedes
if($action == 'add') {  
    $count = addSection($count); 
}

// Add count to the URL so we know what it is
<a href="<?php echo $_SERVER['REQUEST_URI'] ?>&action=add&count=<?php echo $count; ?>" />new section</a>