comparison of 2 arraysLearning Curve- Perfect Tutorial for the beginers | Learning Curve- Perfect Tutorial for the beginers

Compare two arrays using php

$first_array=array("a"=>"hello","b"=>"hi","c"=>"how","d"=>"are");
$second_array=array("a"=>"hello","b"=>"hi","c"=>"how");

$result=array_diff($first_array,$second_array);
echo count($result);echo "<br>";
if((count($first_array)!=count($second_array)) or (count($result)>0)){ echo "change";}else{echo "no change";}

$first_array=array("a"=>"hello","b"=>"hi","c"=>"how","d"=>"are");

$second_array=array("a"=>"hello","b"=>"hi","c"=>"how");

$result=array_diff($first_array,$second_array);

echo count($result);echo "<br>";

if((count($first_array)!=count($second_array)) or (count($result)>0)){ echo "change";}else{echo "no change";}