PHP Arrays
What will be the output of the following PHP code?
$a1 = array("red", "green");
$a2 = array("blue", "yellow");
print_r(array_merge($a1, $a2));

Array ( [0] => red [1] => green)
Array ( [0] => red [1] => green [2] => blue [3] => yellow )
Array ( [0] => blue [1] => yellow )
Array ( [0] => blue [1] => yellow [2] => red [3] => green )

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PHP Arrays
What will be the output of the following PHP code?
$fruits = array ("mango", "apple", "peach", "pear");
$fruits = asort ($fruits);
printr ($fruits);

Array ( [1] => apple [0] => mango [2] => peach [3] => pear )
Error
Array ( [0] => apple [1] => mango [2] => peach [3] => pear )
Array ( [1] => apple [0] => mango [3] => peach [2] => pear )

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PHP Arrays
What will be the output of the following PHP code ?
$age = array("Harry" => "21", "Ron" => "23","Malfoy" => "21");
array_change_key_case($age, CASE_UPPER);
array_pop($age);
print_r($age);

Array ( [Harry] => 21 [Ron] => 23 )
Array ( [Harry] => 21 [Ron] => 23 [Malfoy] => 21 )
Array ( [HARRY] => 21 [RON] => 23 )
Array ( [HARRY] => 21 [RON] => 23 [MALFOY] => 21 )

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