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PHP: bccomp - Manual
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bcaddbccomp
(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
?> BlaBla.cn
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