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bccomp
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bccomp

Name

bccomp — Compares two numbers.

Synopsis

int bccomp(left_operand, right_operand[, scale]); string left_operand: First number to compare string right_operand: Second number to compare int scale (optional): Number of decimal places

Returns

0 if the same; 1 or -1 if different

Description

Compares the value of the first number with the value of the second number. The optional decimal-places argument specifies the number of decimal places to compare. For example, if the number of decimal places is 2, bccomp() would compare to only two decimal places, regardless of how the numbers diverged beyond this level. The function returns 0 if the numbers are the same, 1 if the first number is greater than the second, or -1 if the second number is greater than the first.

Version

Existing since version 3.0

Example

Example 8. Compare two large numbers

$num1="12345.6789";
$num2="12345.6767";
echo bccomp($num1,$num2,2) . "\n";
echo bccomp($num1,$num2,4);

Output:
0
1

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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 http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ 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.