bccomp
(PHP 4, PHP 5)
bccomp — Compare 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
?>
