Combine 2 variable with an array of html code in php

Question

I have 2 variables in my php file and I want to combine it.

 // Option 1
 $x= array();
 $x[] = '<h1>Hello</h1>';
 $x[] = '<h1>World!</h1>';

  // Option 2
 $y= array();
 $y[] = '<h1>This is</h1>';
 $y[] = '<h1>Me!</h1>';

  //Combined Options
 $data = array();
 $data[] = $x;
 $data[] = $y;

If I return the $data

  return $data; // this returns array to string error

and if I return the $x

  return $x; // this is working

and if I return the $y

  return $y; // this is working

However I'm getting array to string conversion error. My goal is,

to combine $x and $y

Answer 1

Array Merge PHP has a useful function to achieve this.

using it is as simple as this:

<?php
$array1 = array("color" => "red", 2, 4);
$array2 = array("a", "b", "color" => "green", "shape" => "trapezoid", 4);
$result = array_merge($array1, $array2);
print_r($result);
?>