PHP Arrays
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;

5
78
19
NULL

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PHP Arrays
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);

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] => 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 )
Error
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 )

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PHP Arrays
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] => 2 [Dog] => 1 [Tiger] => 1 )
Array ( [A] => 5 [Cat] => 2 [Dog] => 2 [Tiger] => 1 )
Array ( [A] => 6 [Cat] => 1 [Dog] => 2 [Tiger] => 1 )
Array ( [A] => 2 [Cat] => 1 [Dog] => 4 [Tiger] => 1 )

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PHP Arrays
What will be the output of the following PHP code?
$fruits = array ("apple", "mango", "peach", "pear", "orange");
$subset = array_slice ($fruits, 2);
print_r ($subset);

Array ( [0] => apple [1] => mango [2] => peach )
Array ( [0] => apple [1] => mango )
Array ( [0] => peach )
Array ( [0] => peach [1] => pear [2] => orange )

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