useful recursive PHP functions

recursively ...

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• ... delete directory remove directory recursively with PHP
• ... get size get filesize of directory and all files within
• ... do whatever PHP can do recursively handle data with PHP

PHP Manual for

gmp_sqrtrem

(PHP 4 >= 4.0.4)

gmp_sqrtrem --  Square root with remainder

Description

array gmp_sqrtrem ( resource a)

Returns array where first element is the integer square root of a (see also gmp_sqrt()), and the second is the remainder (i.e., the difference between a and the first element squared).

Example 1. gmp_sqrtrem() example

<?php
list($sqrt1, $sqrt1rem) = gmp_sqrtrem("9");
list($sqrt2, $sqrt2rem) = gmp_sqrtrem("7");
list($sqrt3, $sqrt3rem) = gmp_sqrtrem("1048576");

echo gmp_strval($sqrt1) . ", " . gmp_strval($sqrt1rem) . "\n";     
echo gmp_strval($sqrt2) . ", " . gmp_strval($sqrt2rem) . "\n";     
echo gmp_strval($sqrt3) . ", " . gmp_strval($sqrt3rem) . "\n";     
?>

The printout of the above program will be:

3, 0
2, 3
1024, 0

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