PHP Arrays
What will be the output of the following PHP code?
$names = array("Sam", "Bob", "Jack");
echo $names[0] . "is the brother of " . $names[1] . " and " . $names[1] . ".".$brother;

Sam is the brother of Bob and Bob) $brother
$brother
Sam is the brother of Bob and Bob)
Error

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

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PHP Arrays
What will be the output of the following PHP code ?
$city_west = array("NYC", "London");
$city_east = array("Mumbai", "Beijing");
print_r(array_replace($city_west, $city_east));

Array ( [1] => Mumbai [0] => Beijing )
Array ( [1] => NYC [0] => London )
Array ( [0] => NYC [1] => London )
Array ( [0] => Mumbai [1] => Beijing )

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PHP Arrays
What will be the output of the following PHP code?
$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);

Array ( [h] => orange )
Array ( [d] => yellow [h] => orange )
Array ( [d] => yellow )
Array ( [i] => orange )

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PHP Arrays
What will be the output of the following PHP code?
$fname = array("Peter", "Ben", "Joe");
$age = array("35", "37", "43");
$c = array_combine($fname, $age);
print_r($c);

Array ( [Peter] => 35 [Ben] => 37 [Joe] => 43 )
Array ( “[Peter] => 35” “[Ben] => 37” “[Joe] => 43” )
Array ( Peter Ben Joe )
Array ( 35 37 43 )

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