useful recursive PHP functions

recursively ...

• ... scan directory scan a directory recursively with PHP
• ... 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_sqrt

(PHP 4 >= 4.0.4)

gmp_sqrt -- Calculate square root

Description

resource gmp_sqrt ( resource a)

Calculates square root of a and returns the integer portion of the result.

Example 1. gmp_sqrt() example

<?php
$sqrt1 = gmp_sqrt("9");
$sqrt2 = gmp_sqrt("7");
$sqrt3 = gmp_sqrt("1524157875019052100");

echo gmp_strval($sqrt1) . "\n";
echo gmp_strval($sqrt2) . "\n";
echo gmp_strval($sqrt3) . "\n";
?>

The printout of the above program will be:

3
2
1234567890

© 2012 lixlpixel