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

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

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

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

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PHP Arrays
What will be the output of the following PHP code?
$place = array("NYC", "LA", "Paris");
array_pop($place);
$place1 = array("Paris");
$place = array_merge($place, $place1);
print_r($place);

Array ( [0] => NYC [1] => LA [2] => Paris)
None of the mentioned
Array ( [0] => NYC [1] => LA [2] => Paris [3] => Paris )
Array ( [0] => LA [1] => Paris [2] => Paris )

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