Answer & Solution
count() function in PHP is used to find the length of an array. It returns the number of elements in the array. Therefore, count($array) will return the length of the array $array.
count() function in PHP is used to find the length of an array. It returns the number of elements in the array. Therefore, count($array) will return the length of the array $array.
Which of the following is a valid variable name in PHP?
A). $my_var
B). $my-var
C). $my var
D). my_var
What is the purpose of the following PHP function?strlen('Hello')
A). Returns the length of a string
B). Converts a string to lowercase
C). Checks if a string contains a substring
D). Returns the first occurrence of a substring in a string
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 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 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 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
$name = 'John';
echo 'Hello, $name!';
?>
A). Hello, John!
B). Hello, $name!
C). Hello, !
D). Undefined variable: name
What will be the result of the expression 'Hello' . ' World' in PHP?
A). 'Hello World'
B). 'Hello . World'
C). 'Hello + World'
D). 'Hello, World'
What does the following PHP code output?<?php
$x = '10';
$y = 20;
echo $x + $y;
?>
A). 30
B). 1020
C). Error
D). 102
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';