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PHP in a Nutshell
book

PHP in a Nutshell

by Paul Hudson
October 2005
Intermediate to advanced content levelIntermediate to advanced
372 pages
11h 35m
English
O'Reilly Media, Inc.
Content preview from PHP in a Nutshell

Name

sqrt()

Synopsis

    float sqrt ( float num )
    To obtain the square root of a number, use the sqrt() function 
, which takes
    as its parameter the value you wish to calculate the square root of:
    print sqrt(25);
    print sqrt(26);

That will output 5 as the result of line one, then 5.0990195135928 for line two.

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Publisher Resources

ISBN: 0596100671Errata Page