What will be the output of the following PHP 7.1 code snippet?

<?php

function xrange($first, $last, $forward = 1)

{ if ($first < $last) {

if ($forward <= 0) {

throw new LogicException('The value of forward should be positive');

}

for ($i = $first; $i <= $last; $i += $forward){

yield $i;

}

} else {

if ($forward >= 0) {

throw new LogicException('The value of forward should be negative');

}

for ($i = $first; $i >= $last; $i += $forward){

yield $i;

}

}

}

echo "\n";

echo 'Output is: ';

foreach (xrange(1, 7, 2) as $num) {

echo "$num";

}

?>

Which is the correct syntax of the function, Closure::from Callable, which is used to convert a callable into a closure?

var_dump((bool) -1); var_dump((bool) 1.5e5); var_dump((bool) 'false'); ?>

$x = array('x' => 'Adam', 'y' => 'Binca'); $y = array('x' => 'Avin', 'y' => 'Beth', 'z' => 'Chris'); $z = $y + $x; $x += $y; var_dump($x); ?>

Which of the following conditions must be followed by functions that are declared with void as their return type? i) Omit their return statement. ii) Use an empty return statement.

class Example_Exp extends Exception {} class Check { public function checking() { try { try { throw new Example_Exp( } catch (Example_Exp $ex) { throw $ex; } } catch (Exception $ex) { var_dump($ex->getMessage()); } } } $bar = new check; $bar->checking(); ?>

Output of this statement echo substr('Think Different',6);

Which PCRE regular expression will match the string

How to install pecl extensions?

What is the name of default class for all classes

Difference between a method declared as static and a normal method?