PHP ARRAYS QUIZ | EXAMIANS

What will be the output of the following PHP code ? $number = range(0, 5); print_r ($number);

Array ( [0] => 0 [5] => 5 )

Array ( [0] => 0 [1] => 1 [2] => 2 [3] => 3 [4] => 4 [5] => 5 )

Array ( [0] => 0 [1] => 0 [2] => 0 [3] => 0 [4] => 0 [5] => 0 )

Array ( [0] => 5 [1] => 5 [2] => 5 [3] => 5 [4] => 5 [5] => 5 )

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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 ( [0] => Mumbai [1] => Beijing )

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

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

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

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What will be the output of the following PHP code? $array1 = array ("KA", "LA", "CA", "MA", "TA"); $array2 = array ("KA", "IA", "CA", "GA", "TA"); $inter = array_intersect ($array1, $array2); print_r ($inter);

Array ( [1] => LA [3] => MA )

Array ( [1] => IA [3] => GA )

Array ( [0] => KA [1] => LA [2] => CA [3] => MA [4] => TA [5] => IA [6] => GA )

Array ( [0] => KA [2] => CA [4] => TA )

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Assume you would like to sort an array in ascending order by value while preserving key associations. Which of the following PHP sorting functions would you use?

ksort()

sort()

asort()

krsort()

usort()

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What will the following script output? $array = array (1, 2, 3, 5, 8, 13, 21, 34, 55); $sum = 0; for ($i = 0; $i < 5; $i++) { $sum += $array[$array[$i]]; } echo $sum;

78

19

NULL

5

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What elements will the following script output? $array = array (true => 'a', 1 => 'b'); var_dump ($array);

None

1 => 'b'

It will output NULL

True => 'a', 1 => 'b'

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What will be the output of the following PHP code? $place = array("NYC", "LA", "Paris"); array_pop($place); $place1 = array("Paris"); $place = array_merge($place, $place1); print_r($place);

Array ( [0] => LA [1] => Paris [2] => Paris )

Array ( [0] => NYC [1] => LA [2] => Paris [3] => Paris )

Array ( [0] => NYC [1] => LA [2] => Paris)

None of the mentioned

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Which array function checks if the specified key exists in the array?

array_key_exists()

array_key_exist()

array_keys_exists()

arrays_key_exists()

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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"); $result = array_intersect($a1, $a2); print_r($result);

Array ( [a] => red [b] => green [c] => blue )

Array ( [a] => red [b] => green [c] => blue [d] => yellow )

Array ( [e] => red [f] => green [g] => blue )

Array ( [a] => red [b] => green [c] => blue [d] => yellow [e] => red [f] => green [g] => blue )

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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 )

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

Array ( [Harry] => 21 [Ron] => 23 )

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What will be the output of the following PHP code ?<br/>$number = range(0, 5);<br/>print_r ($number);

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

What will be the output of the following PHP code?<br/>$array1 = array ("KA", "LA", "CA", "MA", "TA");<br/>$array2 = array ("KA", "IA", "CA", "GA", "TA");<br/>$inter = array_intersect ($array1, $array2);<br/>print_r ($inter);

Assume you would like to sort an array in ascending order by value while preserving key associations. Which of the following PHP sorting functions would you use?

What will the following script output?<br/>$array = array (1, 2, 3, 5, 8, 13, 21, 34, 55);<br/>$sum = 0;<br/>for ($i = 0; $i < 5; $i++) {<br/>$sum += $array[$array[$i]];<br/>}<br/>echo $sum;

What elements will the following script output?<br/>$array = array (true => 'a', 1 => 'b');<br/>var_dump ($array);

What will be the output of the following PHP code?<br/>$place = array("NYC", "LA", "Paris");<br/>array_pop($place);<br/>$place1 = array("Paris");<br/>$place = array_merge($place, $place1);<br/>print_r($place);

Which array function checks if the specified key exists in the array?

What will be the output of the following PHP code ?<br/>$a1 = array("a" => "red", "b" => "green", "c" => "blue", "d" => "yellow");<br/>$a2 = array("e" => "red","f" => "green", "g" => "blue");<br/>$result = array_intersect($a1, $a2);<br/>print_r($result);

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