how to add to array in php code example

Example 1: php append to array

$myArr = [1, 2, 3, 4];

array_push($myArr, 5, 8);
print_r($myArr); // [1, 2, 3, 4, 5, 8]

$myArr[] = -1;
print_r($myArr); // [1, 2, 3, 4, 5, 8, -1]

Example 2: php append element to array

array_push($cart, 13);

Example 3: add item to array in php

<?php

$a=array("red","green");

array_push($a,"blue","yellow");

print_r($a);
?>

Example 4: array_push in php

<?php
// Insert "blue" and "yellow" to the end of an array:


$a=array("red","green");
array_push($a,"blue","yellow");
print_r($a);
?>

Example 5: array push in php

$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>";