Practical application of php round function (with examples)

Practical application of php round function (with examples)

php round function definition and usage

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

Syntax

round(x,prec)

Parameter x is optional. Specifies the number to be rounded. Parameter prec is 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

The above is the details of how to use the php round function, I hope everyone will benefit from watching it.

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