PHP Arrays
What elements will the following script output?
$array = array (true => 'a', 1 => 'b');
var_dump ($array);

None
It will output NULL
1 => 'b'
True => 'a', 1 => 'b'

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

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PHP Arrays
There are three different kind of arrays:

Numeric array, String array, Multidimensional array
Const array, Associative array, Multidimensional array
Numeric array, Associative array, Multidimensional array
Numeric array, Associative array, Dimensional array

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