PHP Variables Easy Questions and Answers

What will be the output of the following PHP code ?

<?php
$p = "$Test";
$q = "/$Example";
echo $p,$q;
?>

Correct Option: C

Since variables $Test and $Example is not defined we only see / as output.

What will be the output of the following PHP code ?

<?php
$t = 2;
function calculation()
{
    echo $GLOBALS['t'];
    $t++;
}
calculation();
calculation();
calculation();
?>

Correct Option: D

Every time the function is called the value of t becomes 2, therefore we get 2 on every function call.

What will be the output of the following PHP code ?

<?php
$m = 31, 14, 15, 61;
echo "$m";
?>

Correct Option: B

In C you won’t get an error but in PHP you’ll get a syntax error.

What will be the output of the following PHP code ?

<?php
function Res($p,$q)
{
    $p = 7;
    $q = 8;
    $r = $p + $q / $q + $p;
    echo "$r";
}
Res(8, 7); 
?>

Correct Option: C

Value 8, 7 is passed to the function but that is lost because p and q are initialised to 7 and 8 inside the function. Therefore we get the given result.

What will be the output of the following PHP code ?

<?php
$p = 6;
$q = 5;
function Res($p , $q )
{
    $r = $p+$q/$q+$p;
    echo "$r";
} 
echo $p;
echo $q;
echo $r; 
Res(5, 6);
?>

Correct Option: A

It is same as above but the value passed into the function is 5,6 and not 6,5. Therefore the difference in answer.