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bcadd — Adds two numbers.


string bcadd(left_operand, right_operand[, scale]);
string left_operand: First number to be added
string right_operand: Second number to be added
int scale (optional): Number of decimal points to return


Sum of two numbers


bcadd() adds two numbers and returns the result, formatted with a specified number of decimal places (optional). The input and output of this function can be integers, floating-point numbers, or a combination of both.


Existing since version 3.0


Example 7. Add two large numbers

$num1 = "9912343.34546";
$num2 = "34546.9912343";
echo bcadd($num1,$num2,3);


PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at The authors of this book have elected not to choose any options under the OPL. This online book was obtained from and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

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