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

this_array()
do_array()
in_array()
is_array()

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PHP Arrays
There are three different kind of arrays:

Const array, Associative array, Multidimensional array
Numeric array, Associative array, Multidimensional array
Numeric array, Associative array, Dimensional array
Numeric array, String array, Multidimensional array

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

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

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

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