The round() function in Python is used to round off a given number to a specified number of digits. It takes two arguments, the first being the number to be rounded and the second being the number of digits to round to. If the second argument is not provided, the function rounds the number to the nearest integer. The function uses the standard rounding rules, where numbers ending in 5 are rounded up if the preceding digit is odd and rounded down if the preceding digit is even. The function returns a float if the second argument is provided, otherwise it returns an integer. Keep reading below to learn how to python round in PHP.

#### Looking to get a head start on your next software interview? Pickup a copy of the best book to prepare: Cracking The Coding Interview!  ## Python ’round’ in PHP With Example Code

Python’s `round()` function is a useful tool for rounding numbers to a specified number of decimal places. If you’re working in PHP and need to perform a similar operation, you can use the `round()` function in PHP.

The `round()` function in PHP works similarly to the `round()` function in Python. It takes two arguments: the number you want to round, and the number of decimal places to round to. Here’s an example:

```\$number = 3.14159; \$rounded = round(\$number, 2); // \$rounded is now 3.14```

In this example, we’re rounding the number `3.14159` to two decimal places. The result is `3.14`.

If you want to round to the nearest whole number, you can omit the second argument:

```\$number = 3.6; \$rounded = round(\$number); // \$rounded is now 4```

In this example, we’re rounding the number `3.6` to the nearest whole number. The result is `4`.

It’s worth noting that the `round()` function in PHP uses “round half up” rounding by default. This means that if the number you’re rounding is exactly halfway between two possible results, it will round up to the nearest even number. For example:

```\$number = 2.5; \$rounded = round(\$number); // \$rounded is now 2```

In this example, `2.5` is exactly halfway between `2` and `3`. Since `2` is an even number, the result is rounded down to `2`.

If you want to use a different rounding method, you can specify it as a third argument to the `round()` function. The possible values are `PHP_ROUND_HALF_UP`, `PHP_ROUND_HALF_DOWN`, `PHP_ROUND_HALF_EVEN`, and `PHP_ROUND_HALF_ODD`. Here’s an example:

```\$number = 2.5; \$rounded = round(\$number, 0, PHP_ROUND_HALF_UP); // \$rounded is now 3```

In this example, we’re rounding `2.5` up to the nearest whole number using the `PHP_ROUND_HALF_UP` rounding method. The result is `3`.

In summary, the `round()` function in PHP is a useful tool for rounding numbers to a specified number of decimal places or to the nearest whole number. It works similarly to the `round()` function in Python and has several options for specifying the rounding method.

## Equivalent of Python round in PHP

In conclusion, the equivalent function of Python’s round() in PHP is the round() function. Both functions have similar functionalities and can be used to round off decimal numbers to a specified number of decimal places. However, it is important to note that the round() function in PHP has some differences in its behavior compared to the round() function in Python. For instance, the PHP round() function uses the “round half up” method by default, while Python’s round() function uses the “round to even” method. Therefore, it is important to understand the differences between the two functions and use them appropriately in your PHP code. Overall, the round() function in PHP is a useful tool for developers who need to perform rounding operations on decimal numbers in their PHP applications.