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
NULL
19

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

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

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

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