(PHP 3, PHP 4 )

bcsub --  Subtract one arbitrary precision number from another


string bcsub ( string left_operand, string right_operand [, int scale])

Subtracts the right_operand from the left_operand and returns the result in a string. The optional scale parameter is used to set the number of digits after the decimal place in the result.

例子 1. bcsub() example


= 1.234;
$b = 5;

bcsub($a, $b);     // -3
echo bcsub($a, $b, 4);  // -3.7660


See also bcadd().

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