PHP

sum two numbers in php

<?php  
$x=10;  
$y=20;  
$z = $x + $y;  
echo "Sum of x and y : ". $z;  
?>

php sum two arrays

<?php
$x=[10,15,50];
$y=[20,30,40];
$count=count($x);

for ($j = 0; $j <$count; $j++) {
        $z[$j] = $x[$j] + $y[$j];
    }
echo  join(",", $x)."<br>";
echo  join(",", $y)."<br>";
echo  join(",", $z)."<br>";

//output
//10,15,50
//20,30,40
//30,45,90


?> 

php sum 2 arrays

<?php
  $i = 1;
  $j = 2;
 $a = $i + $j;
echo "The sum of i and j will be" . $a;
?>