PHP Swap Two Numbers

Syntax

The syntax for swapping two numbers in PHP is:

$temp = $a;
$a = $b;
$b = $temp;

Example

Here is an example of swapping two numbers in PHP:

$a = 5;
$b = 10;

$temp = $a;
$a = $b;
$b = $temp;

echo "a = " . $a . ", b = " . $b;

Output

When running the above code, you should see the following output:

a = 10, b = 5

Explanation

In the above code, we first declare two variables $a and $b with the values of 5 and 10 respectively. We then create another variable $temp and assign it the value of $a. We then swap $a and $b by assigning $b to $a and $temp (which is now equal to the original value of $a) to $b. Finally, we print the values of $a and $b to the screen.

Use

Swapping two numbers is a common task in programming and can be used in a variety of situations, such as sorting or manipulating data in an array.

Important Points

• When swapping two numbers, it is important to use a temporary variable to store one of the values to prevent data loss.
• The above syntax for swapping two variables can be used with any data type, including integers, floats, and strings.

Summary

Swapping two numbers in PHP can be accomplished through the use of a temporary variable and the above syntax. This operation is important for a variety of programming tasks and can be used with any data type.