PHP5中文手册·Compare two arbitrary precision numbers -- 追寻梦想＞编程乐园＞PHP 编程

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.

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.

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

Example#1 bccomp() example


<?php

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

?>


	PHP5中文手册 bcadd bcdiv BC math PHP Manual 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') . "\n"; // -1 echo bccomp('1.00001', '1', 3); // 0 echo bccomp('1.00001', '1', 5); // 1 ?>` bcadd bcdiv BC math PHP Manual