Answer & Solution
'The sum is: '
with the result of the addition of $x
and $y
. Therefore, the output will be 'The sum is: 15'
, as $x + $y
evaluates to 15
, which is then concatenated with the rest of the string.
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<?php
$x = 5;
$y = 10;
echo 'The sum is: ' . ($x + $y);
?>
'The sum is: '
with the result of the addition of $x
and $y
. Therefore, the output will be 'The sum is: 15'
, as $x + $y
evaluates to 15
, which is then concatenated with the rest of the string.
Which of the following PHP functions is used to find the length of an array?
A). count()
B). length()
C). size()
D). sizeof()
What is the purpose of the following PHP code?<?php
$colors = array('Red', 'Green', 'Blue');
foreach ($colors as $color) {
echo $color . '
';
}
?>
A). To loop through an array and print each element
B). To check if a variable is an array
C). To reverse the elements of an array
D). To create a new array
Which of the following is a correct way to declare an array in PHP?
A). $colors = array('Red', 'Green', 'Blue');
B). $colors = 'Red, Green, Blue';
C). $colors = {'Red', 'Green', 'Blue'};
D). $colors = [Red, Green, Blue];
Which of the following PHP operators is used for concatenation of strings?
A). .
B). +
C). &&
D). *
Which of the following statements is true about PHP comments?
A). Comments are ignored by the PHP interpreter
B). Comments can only be single-line
C). Comments must start with /* and end with */
D). Comments are displayed on the webpage
What will be the value of the variable $result
after executing the following PHP code?<?php
$x = 5;
$result = ($x > 10) ? 'Yes' : 'No';
?>
A). Yes
B). No
C). True
D). False
Which of the following is a correct way to increment the value of a variable $count
by 1 in PHP?
A). $count++;
B). $count += 1;
C). $count = $count + 1;
D). $count =+ 1;
What data type is the variable $age = 25;
in PHP?
A). Integer
B). String
C). Boolean
D). Float
What will be the output of the following PHP code?<?php
$name = 'John';
echo 'Hello, $name!';
?>
A). Hello, John!
B). Hello, $name!
C). Hello, !
D). Undefined variable: name
What will be the output of the following PHP code?<?php
$x = 5;
echo $x--;
echo $x;
?>
A). 5 4
B). 5 5
C). 4 4
D). 4 5