PHP ARRAYS QUIZ | EXAMIANS

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

Option 2 and 4

Option 3 and 4

Option 1 and 4

Option 1 and 2

TRUE ANSWER : ?
YOUR ANSWER : ?

What will be the output of the following php code? $states = array("karnataka" => array( "population" => "11,35,000", "captial" => "Bangalore"),"Tamil Nadu" => array( "population" => "17,90,000","captial" => "Chennai") ); echo $states["karnataka"]["population"];

11,35,000

karnataka 11,35,000

population 11,35,000

karnataka population

TRUE ANSWER : ?
YOUR ANSWER : ?

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 )

TRUE ANSWER : ?
YOUR ANSWER : ?

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

5

NULL

19

TRUE ANSWER : ?
YOUR ANSWER : ?

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

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

None

It will output NULL

1 => 'b'

TRUE ANSWER : ?
YOUR ANSWER : ?

Array values are keyed by values (called indexed arrays) or using values (called associative arrays). Of course, these key methods can be combined as well.

Positive number, negative number

Float, string

Even number, string

String, Boolean

Integer, string

TRUE ANSWER : ?
YOUR ANSWER : ?

What will be the output of the following PHP code? $a=array("A","Cat","Dog","A","Dog"); $b=array("A","A","Cat","A","Tiger"); $c=array_combine($a,$b); print_r(array_count_values($c));

Array ( [A] => 2 [Cat] => 1 [Dog] => 4 [Tiger] => 1 )

Array ( [A] => 6 [Cat] => 1 [Dog] => 2 [Tiger] => 1 )

Array ( [A] => 5 [Cat] => 2 [Dog] => 2 [Tiger] => 1 )

Array ( [A] => 2 [Cat] => 2 [Dog] => 1 [Tiger] => 1 )

TRUE ANSWER : ?
YOUR ANSWER : ?

What will be the output of the following PHP code ? $a = array("a" => "Jaguar", "b" => "Land Rover", "c" => "Audi", "d" => "Maseratti"); echo array_search("Audi", $a);

c

a

d

b

TRUE ANSWER : ?
YOUR ANSWER : ?

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

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

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

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

TRUE ANSWER : ?
YOUR ANSWER : ?

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

array_keys_exists()

array_key_exists()

arrays_key_exists()

array_key_exist()

TRUE ANSWER : ?
YOUR ANSWER : ?

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/>$states = array("karnataka" => array( "population" => "11,35,000", "captial" => "Bangalore"),"Tamil Nadu" => array( "population" => "17,90,000","captial" => "Chennai") );<br/>echo $states["karnataka"]["population"];

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

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);

Array values are keyed by values (called indexed arrays) or using values (called associative arrays). Of course, these key methods can be combined as well.

What will be the output of the following PHP code?<br/>$a=array("A","Cat","Dog","A","Dog");<br/>$b=array("A","A","Cat","A","Tiger");<br/>$c=array_combine($a,$b);<br/>print_r(array_count_values($c));

What will be the output of the following PHP code ?<br/>$a = array("a" => "Jaguar", "b" => "Land Rover", "c" => "Audi", "d" => "Maseratti");<br/>echo array_search("Audi", $a);

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);

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