How to use php round function?

php The round function is used to round floating-point numbers. Its syntax is round(x,prec). The parameter x is optional and specifies the number to be rounded; prec is optional and specifies the number of digits after the decimal point.

#How to use php round function?

Definition and usage

round() function rounds floating point numbers.

Syntax

round(x,prec)

Parameters

x Optional. Specifies the number to be rounded.

prec Optional. Specifies the number of digits after the decimal point.

Description

Returns the result of rounding x according to the specified precision prec (the number of decimal digits after the decimal point). prec can also be negative or zero (default).

Tips and Notes

Note: PHP cannot handle strings like "12,300.2" correctly by default.

Note: The prec parameter was introduced in PHP 4. .

Example

<?php
echo(round(0.60));
echo(round(0.50));
echo(round(0.49));
echo(round(-4.40));
echo(round(-4.60));
?>

Output:

1
1
0
-4
-5

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