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;

NULL
78
5
19

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PHP Arrays
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] => blue [b] => yellow [c] => red [d] => green )
Array ( [a] => red [b] => green [c] => blue [d] => yellow )
Array ( [0] => red [1] => green [2] => blue [3] => yellow )

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

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