php floor – Round Down and Find the Floor of a Number in php

To find the floor of a number using php, the easiest way is to use the php floor() function.

echo floor(2.434); // Output: 2

Finding the floor of a number in php is easy. We can round down numbers to the nearest integer with the php floor() function.

echo floor(5.4); // Output: 5

We can use the floor() function to find the floor of both positive and negative numbers.

echo floor(7.2); // Output: 7
echo floor(-1.1); // Output: -2

If you pass an integer to the floor() function, you will get that integer back.

echo floor(9); // Output: 9

If you want to round up instead of rounding down, you can use the php ceil() function.

Finding the Floor of Positive Number with floor in php

Using the floor() function, we can find the floor of positive numbers in php.

A few examples of calling the floor() function with positive numbers are below:

echo floor(1); // Output: 1
echo floor(381.38); // Output: 381
echo floor(100.123786); // Output: 100
echo floor(9.9999); // Output: 9
echo floor(9.0001); // Output: 9

Finding the Floor of Negative Number with floor in php

Using the floor() function, we can find the floor of negative numbers in php.

A few examples of calling the floor() function with negative numbers are below:

echo floor(-1); // Output: -1
echo floor(-381.38); // Output: -382
echo floor(-100.123786); // Output:-101
echo floor(-9.9999); // Output: -10
echo floor(-9.0001); // Output: -10

Hopefully this article has been helpful for you to use the php floor() function to find the floor of a number.