What will be the output of the following PHP code?
<?php
$a1 = array(“a”=>”red”, “b”=>”green”, “c”=>”blue”, “d”=>”yellow”);
$a2 = array(“e”=>”red”, “f”=>”green”, “g”=>”blue”);
$result = array_diff($a1, $a2);
print_r($result);
?>
a) Array ( [d] => yellow )
b) Array ( [c] => blue )
c) Array ( [a] => red )
d) Array ( [e] => yellow )
Answer: a
Explanation: The array_diff() function compares the values of two (or more) arrays, and returns the differences.
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