PHP Basic Programs for Beginners

PHP Basic Programs for Beginners - Important Points

1.		What is the output of the following code snippet? <?php $x = 5; $y = 10; $z = $x + $y; echo "The sum is: $z"; ?>

What is the output of the following code snippet?

<?php
$x = 5;
$y = 10;
$z = $x + $y;
echo "The sum is: $z";
?>

A. The sum is: 15

B. The sum is: $z

C. The sum is: 5 + 10

D. None of the above

View Answer Discuss Work Space

Answer: option a

Explanation:

The code snippet adds two variables $x and $y and stores the result in $z. The echo statement then displays the value of $z, which is 15.

2.		Which of the following is a valid PHP variable name?

A. $my_var

B. 1var

C. my-var

D. my var

View Answer Discuss Work Space

Answer: option a

Explanation:

A valid PHP variable name must start with a dollar sign ($) followed by letters, numbers, or underscores. Option A satisfies this requirement, while the other options do not.

3.		What is the output of the following code snippet? <?php $a = "Hello"; $b = "World"; echo $a . " " . $b; ?>

What is the output of the following code snippet?

<?php
$a = "Hello";
$b = "World";
echo $a . " " . $b;
?>

A. HelloWorld

B. Hello World

C. Hello "World"

D. None of the above

View Answer Discuss Work Space

Answer: option b

Explanation:

The code snippet concatenates two strings $a and $b using the dot (.) operator and then displays the result, which is "Hello World".

4.		Which of the following is the correct syntax to create a function in PHP?

A. function myFunction() {}

B. def myFunction() {}

C. func myFunction() {}

D. None of the above

View Answer Discuss Work Space

Answer: option a

Explanation:

The correct syntax to create a function in PHP is by using the keyword "function" followed by the function name and parentheses, and then the function body enclosed in curly braces.

5.		What is the output of the following code snippet? <?php $colors = array("red", "green", "blue"); echo $colors[1]; ?>

What is the output of the following code snippet?

<?php
$colors = array("red", "green", "blue");
echo $colors[1];
?>

A. red

B. green

C. blue

D. None of the above

View Answer Discuss Work Space

Answer: option b

Explanation:

The code snippet creates an array $colors containing three elements and then displays the second element of the array, which is "green".

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