example repeater creation and save front-end form

repeater_example.php

<?php

$mypage = $pages->get("/about/");

if($input->post->submit){
    $n = 1;
    $title = "element_title_$n";
    $url = "external_url_$n";
    $mypage->setOutputFormatting(false);

    while($input->post->$title){
        // on first round remove all repeater items, to keep things easy.
        // teasers is the repeater field
        if($n == 1) $mypage->teasers->removeAll();
        
        // create new repeater item
        $item = $mypage->teasers->getNewItem();
        
        // populate any fields in the repeater you want
        $item->element_title = $input->post->$title;
        $item->external_url = $input->post->$url;
        
        // save the repeater item (a page itself)
        $item->save();
        
        // add the repeater item to the page
        $mypage->teasers->add($item);

        // update counter and field names
        $n++;
        $title = "element_title_$n";
        $url = "external_url_$n";
    }
    if($n > 1) {
        // save the page
        $mypage->save('teasers');
    }

}

?>
<form name="test" method="post">

    <?php $count = 1; foreach($mypage->teasers as $key => $t): ?>
    <input type="text" name="element_title_<?php echo $key+1?>" value="<?php echo $t->element_title?>"/>
    <input type="text" name="external_url_<?php echo $key+1?>" value="<?php echo $t->external_url?>"/><br/>
    <?php $count++; endforeach; ?>
    
    <input type="text" name="element_title_<?php echo $count; ?>" value=""/>
    <input type="text" name="external_url_<?php echo $count; ?>" value=""/><br/>
    
    <input type="text" name="element_title_<?php $count++; echo $count; ?>" value=""/>
    <input type="text" name="external_url_<?php echo $count; ?>" value=""/><br/>

    <input type="submit" name="submit" value="submit"/>
</form>