PHP code to reverse an integer number

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mahmoud2506

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2022-05-25

305

Given an integer number and we have to find, print its reverse number using PHP.

Example

Input number is: 12345
Reverse number will be: 54321

Logic

Take (input or assign) a number
Assign 0 to the variable, in which we are going to store reverse number (Here, I am using ‘reverse’)
Run the following two steps until number is not zero
Get the digit using modules (%) operator and add it into the ‘reverse*10’
Now, divide the number by 10
Finally, when number will be zero, print the ‘reverse’

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All Answers

mahmoud2506

2022-05-25

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PHP code to reverse an integer number

<?php
	//input
	$num = 12345;
	//reverse should be 0
	$reverse = 0;
	//run loop until num is not zero
	while ($num != 0)
	{
		$reverse = $reverse * 10 + $num % 10;
		$num = (int)($num / 10); 
	}
	/printing the reverse number 
	echo "Reverse number of 12345 is: $reverse";
?>

Output

PHP code to reverse number