PHP Arrays
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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PHP Arrays
What will be the output of the following PHP code ?
$city_west = array("NYC", "London");
$city_east = array("Mumbai", "Beijing");
print_r(array_replace($city_west, $city_east));

Array ( [0] => NYC [1] => London )
Array ( [1] => NYC [0] => London )
Array ( [1] => Mumbai [0] => Beijing )
Array ( [0] => Mumbai [1] => Beijing )

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PHP Arrays
What will be the output of the following PHP code?
$fruits = array ("mango", "apple", "peach", "pear");
$fruits = asort ($fruits);
printr ($fruits);

Array ( [0] => apple [1] => mango [2] => peach [3] => pear )
Error
Array ( [1] => apple [0] => mango [3] => peach [2] => pear )
Array ( [1] => apple [0] => mango [2] => peach [3] => pear )

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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 Ben Joe )
Array ( [Peter] => 35 [Ben] => 37 [Joe] => 43 )
Array ( “[Peter] => 35” “[Ben] => 37” “[Joe] => 43” )
Array ( 35 37 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");
$result = array_intersect($a1, $a2);
print_r($result);

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

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