Replace isset for each $_POST using foreach - php

Question

I've been trying to replace each isset for $_POST(s) using foreach.
This is the real code using isset for each $_POST :
<form method='post'>
<input type='text' name='name'> <br>
<input type='text' name='address'> <br>
<input type='submit' name='send'>
</form>
<?php
if (isset($_POST['name']) && isset($_POST['address']) && isset($_POST['send']))
{
echo "All elements have been submitted";
}
else
{
echo "You forget some elements, try checking name or address";
}
?>
is there a way I can replace 4 isset(s) above with single isset using for each?
I've made this and it goes wrong.
<form method='post'>
<input type='text' name='nama'> <br>
<input type='text' name='alamat'> <br>
<input type='submit' name='kirim'>
</form>
<?php
foreach($_POST as $value)
{
if (isset($value))
{
echo "All elements have been submitted";
}
else
{
echo "You forget some elements, try checking name or address";
}
}
?>
Need help guys, It's just wasting of time if I have to write isset one by one for each element I send via post / get. I've seen something like this before in visual basic, my friend made an foreach construct to validate all textboxes in a form, so he didn't need to create something like this anymore :
if textbox1.text="" && textbox.2.text="" and so on

Answer 1

EDIT: jbrahy just had a typo. His answer is good now.
I think jbrahy's approach is the right general idea... but I don't think it actually works.
I'd do this.
$requiredFields = ["nama","alamat","kirim"];
$allElementsSet = true;
foreach ($requiredFields as $requiredField)
{
if (!isset($_POST[$requiredField]))
{
$allElementsSet = false;
break;
}
}
if ($allElementsSet)
{
echo "All elements have been submitted";
} else {
echo "You forget some elements, try checking name or address";
}

Answer 2

$_POST will only have the variables that are passed in and there are HTML elements that might not be passed in by just submitting. It's probably best to create a $required_fields array and even better if you can get some field validation but that's not what you asked for here. You'll want to take the key and value of $_POST.
$required_fields = array("name" => FALSE, "alamat" => FALSE, "kirim" => FALSE);
foreach ($required_fields as $key => $value){
if (isset($_POST[$key])){
$required_fields[$key] = TRUE;
}
}
foreach ($required_fields as $key => $value){
if (!$required_fields[$key]){
echo "Missing value for " . $key;
}
}
if you are trying to figure out if every key that is passed in has a value then something like this would work also.
foreach ($_POST as $key => $value){
if ($value == ""){
echo "Value(s) are missing";
break;
}
}