While creating or modifying an array in PHP 7.1, what will happen if an empty index operator is applied on a string?

Correct syntax of the is_iterable() function, which is used to verify whether or not the content of a variable is an iterable value?

In PHP 7.1, which operators are non-associative?

Which option can be used to mark the type declarations for parameters and return values as nullable, by prefixing the type name?

In relation to PHP array cast, Booleans can be cast to which of the following options?

Output of the following PHP 7.1 code snippet? - abstract class A_Class { abstract protected function name_P($name); } class Example extends A_Class { public function Name_P($name, $separator = '.') { if ($name == 'Mango') { $product = 'Fruit'; } elseif ($name == 'Carrot') { $product = 'Vegitable'; } else { $product =''; } return '{$name}{$separator} {$product}'; } } $class = new Example; echo $class->Name_P('Mango'), '\n'; echo $class->Name_P('Carrot'), '\n'; ?>

What operator is used to test if two values are identical in every way

$x = 10.88; echo (int) $x;

How to open file in read/write mode?

Include files must have the file extension '.inc'

How do you kill or destroy a session?