Key casts in arrays. What is the resulting array $a = array( 1 => "John", "1" => "Doe", 1.5 => "Jane", true => "Smith", );

Output of the next code? : $someString = 1.2e3; var_dump(strlen($someString));

Output in following codes? 'green', 'red', 'blue'); $array2 = array('b' => 'green', 'yellow', 'red'); $result = array_intersect($array1, $array2); print_r($result); ?>

What will be the result of code ? $a = 0 or 1; $b = 0 || 1; echo '$a, $b';

Output of this code. function test(&$var) { $var=$var-1; return $var; } $returnVar = test(50); echo $returnVar. ' is answer.';

Output of this code snippet? $i = 5; print $i++ + ++$i;

Which is correct about the following snippet? function example() { foreach (range(5, 7) as $a){yield; } } var_dump(iterator_to_array(example())); ?>

We have two variable definitions: 1. 023 2. x23 Choose the correct options:

Which is not supported in PHP5?

You need to keep an eye on the existing number of objects of a given class without introducing a non-class member variable. Which makes this happen?

What will be the output?