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

`echo ceil(2.434); // Output: 3`

Finding the ceiling of a number in php is easy. We can round up numbers to the nearest integer with the php **ceil()** function.

`echo ceil(5.4); // Output: 6`

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

```
echo ceil(7.2); // Output: 8
echo ceil(-1.1); // Output: -1
```

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

`echo ceil(9); // Output: 9`

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

## Finding the Ceiling of Positive Number with ceil in php

Using the **ceil()** function, we can find the ceiling of positive numbers in php.

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

```
echo ceil(1); // Output: 1
echo ceil(381.38); // Output: 382
echo ceil(100.123786); // Output: 101
echo ceil(9.9999); // Output: 10
echo ceil(9.0001); // Output: 10
```

## Finding the Ceiling of Negative Number with ceil in php

Using the **ceil()** function, we can find the ceiling of negative numbers in php.

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

```
echo ceil(-1); // Output: -1
echo ceil(-381.38); // Output: -381
echo ceil(-100.123786); // Output: -100
echo ceil(-9.9999); // Output: -9
echo ceil(-9.0001); // Output: -9
```

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

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