What will be the output of the following code?

<?php

$numbers=array();

$numbers[1] = 1;

$numbers[2] = 2;

$numbers[3] = 3;

$numbers[4] = 4;

$key=  array_search(3,$numbers);

unset($numbers[$key]);

print_r($numbers);

?>

Which is not related to debugging in PHP?

Output of the code? ' ?>'

What is the output?

Output of the code?

Which is correct with regard to echo and print?

What is the output of the following code? $a='20' $a -= 5; echo $a++;

Result of calling json_encode() on an empty array?

What's the output? $one='two'; $two='one'; echo $$$one;

Default timeout of a PHP session cookie ?

Which mode parameter should be used with the fopen() function to open a file and point to the end for writing only?