PHP ARRAYS QUIZ | EXAMIANS

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] => NYC [1] => London )

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

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

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

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YOUR ANSWER : ?

Which function will return true if a variable is an array or false if it is not?

this_array()

do_array()

is_array()

in_array()

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What functions count elements in an array? 1. count 2. Sizeof 3. Array_Count 4. Count_array

Option 1 and 4

Option 3 and 4

Option 2 and 4

Option 1 and 2

TRUE ANSWER : ?
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What will be the output of the following PHP code ? $a1 = array("a" => "red", "b" => "green", "c" => "blue", "d" => "yellow"); $result = array_flip($a1); print_r($result);

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

Array ( [red] => red [green] => green [blue] => blue [yellow] => yellow )

Array ( [a] => a [b] => b [c] => c [d] => d )

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

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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", "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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What will be the output of the following PHP code? $cars = array("Volvo", "BMW", "Toyota"); echo "I like " . $cars[2] . ", " . $cars[1] . " and " . $cars[0] . ".";

I like Volvo, BMW and Toyota

I like Toyota, BMW and Volvo

I like Volvo, Toyota and BMW

I like BMW, Volvo and Toyota

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Which function can be used to move the pointer to the previous array position?

prev()

previous()

last()

before()

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What will be the output of the following PHP code? $a1 = array("red", "green"); $a2 = array("blue", "yellow"); $a3 = array_merge($a1, $a2); $a4 = array("a", "b", "c", "d"); $a = array_combine($a4, $a3); print_r($a);

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

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

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

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

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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;

$brother

Sam is the brother of Bob and Bob) $brother

Sam is the brother of Bob and Bob)

Error

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What will be the output of the following PHP code? $fruits = array ("apple", "orange", "banana"); echo (next($fruits)); echo (next($fruits));

appleapple

orangebanana

appleorange

orangeorange

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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));

Which function will return true if a variable is an array or false if it is not?

What functions count elements in an array?<br/>1. count<br/>2. Sizeof<br/>3. Array_Count<br/>4. Count_array

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

What will be the output of the following PHP code?<br/>$cars = array("Volvo", "BMW", "Toyota");<br/>echo "I like " . $cars[2] . ", " . $cars[1] . " and " . $cars[0] . ".";

Which function can be used to move the pointer to the previous array position?

What will be the output of the following PHP code?<br/>$a1 = array("red", "green");<br/>$a2 = array("blue", "yellow");<br/>$a3 = array_merge($a1, $a2);<br/>$a4 = array("a", "b", "c", "d");<br/>$a = array_combine($a4, $a3);<br/>print_r($a);

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

What will be the output of the following PHP code?<br/>$fruits = array ("apple", "orange", "banana");<br/>echo (next($fruits));<br/>echo (next($fruits));