bccomp Compare two arbitrary precision numbers


bccomp

(PHP 4, PHP 5)

bccompCompare two arbitrary precision numbers

说明

int bccomp ( string $left_operand , string $right_operand [, int $scale ] )

Compares the left_operand to the right_operand and returns the result as an integer.

参数

left_operand

The left operand, as a string.

right_operand

The right operand, as a string.

scale

The optional scale parameter is used to set the number of digits after the decimal place which will be used in the comparison.

返回值

Returns 0 if the two operands are equal, 1 if the left_operand is larger than the right_operand, -1 otherwise.

范例

Example #1 bccomp() example

<?php

echo bccomp('1''2') . " ";   // -1
echo bccomp('1.00001''1'3); // 0
echo bccomp('1.00001''1'5); // 1

?>

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