PHP ARRAYS QUIZ | EXAMIANS

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

arrays_key_exists()

array_key_exist()

array_keys_exists()

array_key_exists()

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YOUR ANSWER : ?

What will be the output of the following PHP code? $a = array("red", "green", "blue"); array_pop($a); print_r($a);

Array ( [0] => blue [1] => blue )

Array ( [0] => red [1] => blue )

Array ( [0] => green [1] => blue )

Array ( [0] => red [1] => green )

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YOUR ANSWER : ?

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

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

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

Array ( [0] => red [1] => green )

Array ( [0] => blue [1] => yellow )

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

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

Array ( Peter Ben Joe )

Array ( 35 37 43 )

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

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What will be the output of the following PHP code ? $a = array(12, 5, 2); echo(array_product($a));

024

120

010

060

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

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 )

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

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

Array ( [a] => red )

Array ( [e] => yellow )

Array ( [d] => yellow )

Array ( [c] => blue )

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

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

TRUE ANSWER : ?
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What will be the output of the following PHP code? $face = array ("A", "J", "Q", "K"); $number = array ("2","3","4", "5", "6", "7", "8", "9", "10"); $cards = array_merge ($face, $number); print_r ($cards);

Error

Array ( [0] => A [1] => 2 [2] => J [3] => 3 [4] => Q [5] => 4 [6] => K [7] => 5 [8] => 6 [9] => 7 [10] => 8 [11] => 9 [12] => 10 )

Array ( [0] => 2 [1] => 3 [2] => 4 [3] => 5 [4] => 6 [5] => 7 [6] => 8 [7] => 9 [8] => 10 [9] => A [10] => J [11] => Q [12] => K )

Array ( [0] => A [1] => J [2] => Q [3] => K [4] => 2 [5] => 3 [6] => 4 [7] => 5 [8] => 6 [9] => 7 [10] => 8 [11] => 9 [12] => 10 )

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.

Even number, string

Float, string

Integer, string

Positive number, negative number

String, Boolean

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

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

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

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

What will be the output of the following PHP code ?<br/>$a = array(12, 5, 2);<br/>echo(array_product($a));

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/>$a1 = array("a"=>"red", "b"=>"green", "c"=>"blue", "d"=>"yellow");<br/>$a2 = array("e"=>"red", "f"=>"green", "g"=>"blue");<br/>$result = array_diff($a1, $a2);<br/>print_r($result);

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/>$face = array ("A", "J", "Q", "K");<br/>$number = array ("2","3","4", "5", "6", "7", "8", "9", "10");<br/>$cards = array_merge ($face, $number);<br/>print_r ($cards);

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.