strlen('Hello')
strlen() function in PHP is used to return the length of a string. Therefore, strlen('Hello') will return 5, as the string 'Hello' contains five characters.
Which of the following PHP operators is used to compare whether two values are equal and of the same data type?
A). ===
B). ==
C). =
D). !=
What will be the output of the following PHP code?<?php
$x = 10;
$y = 5;
echo $x + $y;
?>
A). 15
B). 5
C). 10
D). Error
Which of the following PHP functions is used to find the length of an array?
A). count()
B). length()
C). size()
D). sizeof()
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 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
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
What will be the output of the following PHP code?<?php
$x = 5;
$y = 10;
echo 'The sum is: ' . ($x + $y);
?>
A). The sum is: 15
B). The sum is: 5 + 10
C). The sum is: $x + $y
D). The sum is: 510
What is the correct way to declare a variable in PHP?
A). $name = 'John';
B). name = 'John';
C). var name = 'John';
D). String name = 'John';
Which of the following is a valid variable name in PHP?
A). $my_var
B). $my-var
C). $my var
D). my_var
What does the following PHP code output?<?php
$x = '10';
$y = 20;
echo $x + $y;
?>
A). 30
B). 1020
C). Error
D). 102