PHP Arrays
Absent any actual need for choosing one method over the other, does passing arrays by value to a read-only function reduce performance compared to passing them by reference?

Yes, but only if the array is large.
Yes, because the interpreter must always create a copy of the array before passing it to the function.
No
Yes, because PHP must monitor the execution of the function to determine if changes are made to the array.
Yes, but only if the function modifies the contents of the array.

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PHP Arrays
What array will you get if you convert an object to an array?

An array with keys of that object as the array's elements
An array with properties of that object as the Key elements
An array with properties of that array as the object's elements
An array with properties of that object as the array's elements

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PHP Arrays
There are three different kind of arrays:

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

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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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