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mt_getrandmax — Returns the greatest value that can be returned by the mt_rand() function.


int mt_getrandmax(void)


Greatest random value that can be generated by the Mersenne Twister function


This function returns the maximum value that mt_rand() can return.


PHP 3 since 3.0.6, PHP 4

See also

See also getrandmax() , mt_rand() , mt_srand() , rand() , srand()


Example 681. Get the maximum possible result from mt_rand()

echo "The largest value that mt_rand() can return with no arguments is ", mt_getrandmax();

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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