PHP While Loops Easy Questions and Answers

What will be the output of the following PHP code ?

<?php
$m = 5;
while (++$m)
{   
    while ($m > 0)
        print $m;
}
?>

The loop never ends as m is always incremented and then decremented.

What will be the output of the following PHP code ?

<?php
$p = 5;
while($p = 20)
{   
    print "INDIA";
}
print "USA";
?>

While condition always gives 1.

What will be the output of the following PHP code ?

<?php
$s = "";
while ($s = 20)
{   
    print "Interveiw";
}
print "Mania";
?>

While condition always gives 1.

What will be the output of the following PHP code ?

<?php
$p = 10;
while (--$p > 0)
{   
    $p++; 
    print $p; 
    print "INDIA";
}
?>

p is decremented in the first while execution and then continuously incremented back.

What will be the output of the following PHP code ?

<?php
$k = 15;
while (--$k > 0 && ++$k)
{   
    print $k;
}
?>

As it is && operator it is being incremented and decremented continuously.