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", "h" => "orange");
$a3 = array("i" => "orange");
$a4 = array_combine($a2, $a3);
$result = array_diff($a4, $a2);
print_r($result);
?>
<?php
$a1 = array("a" => "red", "b" => "green", "c" => "blue", "d" => "yellow");
$a2 = array("e" => "red", "f" => "green", "g" => "blue", "h" => "orange");
$a3 = array("i" => "orange");
$a4 = array_combine($a2, $a3);
$result = array_diff($a4, $a2);
print_r($result);
?>
A. Array ( [d] => yellow )
B. Array ( [i] => orange )
C. Array ( [h] => orange )
D. Array ( [d] => yellow [h] => orange )
Answer: Option A
maybe this code will result as :
Array ( [i] => orange )
because the array_diff is not between $a4 and $a1
It should be $a = array_merge($a2, $a3);
array_combine() give warning if both array's parameter have not same.
many of question's answer are wrong. Please check it.
It should be $a = array_merge($a2, $a3);
array_combine() give warning if both array's parameter have not same.
many of question's answer are wrong. Please check it.