What is the most efficient way to round a number up to the nearest thousand in PHP?

To round a number up to the nearest thousand in PHP, you can use the ceil() function along with division and multiplication. First, divide the number by 1000 to get the quotient, then use ceil() to round it up to the nearest whole number. Finally, multiply the rounded quotient by 1000 to get the result rounded up to the nearest thousand.

$number = 5678;
$roundedNumber = ceil($number / 1000) * 1000;
echo $roundedNumber; // Output: 6000