php if then add to array code example

Example 1: php add element to array

<?php
$stack = array("orange", "banana");
array_push($stack, "apple", "raspberry");
?>

Example 2: php add to array

$cart = array();
$cart[] = 13;
$cart[] = 14;
// etc

//Above is correct. but below one is for further understanding
$cart = array();
for($i=0;$i<=5;$i++){
    $cart[] = $i;  
}
echo "<pre>";
print_r($cart);
echo "</pre>";