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Whitespace in PHP - (BCA / B.Tech)

Whitespace in PHP in Hindi | Whitespace in PHP in Hindi:

Whitespace in PHP does not affect the functionality of the code, but its correct use makes the code organized, professional, and easy to understand.
By using whitespace, you not only become a good programmer, but it also becomes simple for your team to understand the code.
Whitespace means empty spaces that are not visible in programming code. This includes spaces, tabs, and new lines.
Whitespace in PHP helps in reading and understanding the code, but it does not affect the functionality of the PHP code.

Types of Whitespace in PHP in Hindi | Types of Whitespace:

Space: An empty space created by the space button.

Example:

$a = 10; // This line and "$a=10;" will both work the same.

Tab: Indenting the code with the help of a tab. This makes the code organized and easy to read.

Example:

if ($a > 5) {

echo "Value is greater than 5"; // A tab has been used here.

}

New Line: When we press Enter, the code goes to a new line.

Example:

echo "Hello";

echo "World"; // This will output on two different lines.

Importance of Whitespace in PHP in Hindi | Importance of Whitespace in PHP:

1. Making the code easy to read (Readability): Whitespace makes the code organized and easy to understand.

// Without whitespace

if($a>5){echo"Value is greater than 5";}

// With whitespace

if ($a > 5) {

echo "Value is greater than 5";

}

2. Help in code formatting: The correct use of whitespace makes the code look clean and professional.

function add($a, $b) {

return $a + $b;

}

3. No effect on the PHP interpreter: Whitespace does not matter to PHP. The PHP interpreter ignores it.

echo "Hello World"; // Correct

Where is whitespace used?

1. In conditions and loops:

if ($x > 10) {

echo "X is greater than 10";

}

for ($i = 0; $i < 10; $i++) {

echo $i;

}

2. In function declaration and call:

function greet($name) {

return "Hello, " . $name;

}

echo greet("Rahul");

3. In PHP with HTML:

<!DOCTYPE html>

<html>

<head>

<title>PHP and Whitespace</title>

</head>

<body>

<?php

echo "This is PHP code";

</body>

</html>

4. In writing SQL queries:

$sql = "SELECT *

FROM users

WHERE age > 18";

Rules and precautions related to whitespace:

Use in the right place: Use whitespace to organize the code, not to make the code unnecessarily large.
Pay attention to indentation: Use Tab or Spaces consistently to indent the code.

if ($a > 10) {

echo "Value is greater than 10"; // Correct

}

Effect of whitespace in HTML: Whitespace in HTML can be visible in the browser.

<p>This is an example.</p>

No effect of whitespace inside PHP: Whitespace does not affect the output in PHP.

echo "Hello World"; // Correct

Example: Correct use of whitespace

<?php

// Well-formatted code

$number = 15;

if ($number > 10) {

echo "Number is greater than 10";

} else {

echo "Number is 10 or less";

}

Example: Incorrect use of whitespace

<?php

// Code without formatting

$number=15;if($number>10){echo"Number is greater than 10";}else{echo"Number is 10 or less";}

Whitespace in PHP

Whitespace in PHP in Hindi | Whitespace in PHP in Hindi:

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