|
|
|
File: C:/usr/local/lib/php/blueshoes-4.2/core/util/Bs_Number.class.php
BlueShoes Application Framework - util
Bs_Number
Bs_Object
|
+-- Bs_Number
This static class provides many useful number methods.
|
public class Bs_Number extends Bs_Object
This static class provides many useful number methods.
no dependencies here.@status experimental
| Authors | |
| Version | 4.0.$id$ |
| Copyright | blueshoes.org |
|
| |
|
Methods inherited from Bs_Object |
| isex, isexception, tostring, tohtml, persist, unpersist, bs_object, bbsetoutput, bbawake, bbisawake, bbxmsg, bbxfunctionstart, bbxfunctionend, bbxecho, bbxvar, bbxvardump, bbforcetrace, bbbufferstart, bbbufferget, bbbufferendflush, bbbufferendclean |
|
|
|
|
|
Private Constant Summary |
| BS_NUMBER_VERSION |
>>4.0.$x$<< |
Warning: documentation is missing. |
|
Public Method Details |
roundNoTrim |
|
public string roundNoTrim( mixed $value, [ integer $precision ] )
|
| |
rounds a given number to the specified number of digits after the dot.
this method uses php's round() with the following difference:PHP: round(5.4, 2) => 5.4THIS: round(5.4, 2) => 5.40
|
| Parameter |
|
| mixed |
$value |
|
|
(double, int or something numeric) |
|
|
| integer |
$precision |
= >>2<< |
|
(default is 2) |
|
| Returns |
string (!!!) |
|
hexToBin |
|
public string hexToBin( string $source )
|
| |
easy function to convert hexdata to bindata.
It's very good to use decode mcrypt hexdata.example:$hexdata="FFF0A025ef";$bindata = hex2bin($hexdata);
|
| Parameter |
|
|
| Returns |
string bin |
| Copyright |
dziadek@xcom.pl http://www.zend.com/codex.php?id=408&single=1 |
|
gcd |
|
public int gcd( int $a, int $b )
|
| |
A simple function that finds the Greatest Common Denominator for two numbers.
example: gcd(40, 12) => 4
|
| Parameter |
|
|
|
|
| Returns |
int greatest common denominator |
| Copyright |
gpl J.A. Greant (zak@nucleus.com) Version 1: June 9, 2000 http://www.zend.com/codex.php?id=174&single=1 |
|
Bs_Number |
|
public void Bs_Number( )
|
| |
Warning: documentation is missing.
|
| Returns |
void |
|
|
Private Method Details |
isNumericLarge |
|
private bool isNumericLarge( mixed $s )
|
| |
there is a problem with php's is_numeric: it's limited to 16 digits. a
17 digit number/string would be interpreted as not numeric. :(there are many different solutions posted athttp://www.php.net/manual/en/function.is-numeric.phpsome are just there for ppl still using php3 cause is_numeric() doesn't exist there.some also try to work around the 16 digits limitation. so let's see which one is goodfor us:1)ymoi@netcourrier.com 02-Aug-2001 04:29 To test if a variable is numeric or not :$temp = (float) $var;$temp = (string) $temp;if ($temp<> $var) { //var is not numeric}=> FAILED with a 40 digit number; 1234567890123456789212345678931234567894 != 1.2345678901235E+0392)uioreanu@hotmail.com 31-Jul-2001 06:55 Or something like:if (((int) $sWord)== $sWord) {// numeric only word// ...}=> FAILED with '1 23' and 'abc'.3)php@starnet.com 19-Jun-2001 04:30 In PHP3, how about this?function is_numeric($n) {return(0 + $n == $n);}=> FAILED with '1 23' and 'abc'.4)ealma@hotmail.com 18-May-2001 12:02 Here is some code that will detect large values for numeric and for PHP3.function is_num(s) {v = true;for i = 0 to strlen(s) {if (ord(substr(s,i,1)) < 48 || ord(substr(s,i,1)) > 57) v = false;}return v;}=> FAILED with -123.45E293, '-123.45E293' (as string or number).5)ASkwar@DigitalProjects.com 26-May-2001 06:56 Someone wanted to know how to check if a val is numeric in PHP3. Here's my take:$val = -123.45E293;$match = '^-?\d+(?:\.\d+)?(?:[Ee]-?\d+)$';if (preg_match('|' . $match . '|', $val)){echo $val . ' is a number!';} else {echo $val . ' is not a number!';}=> FAILED with 123, 1234567890123456789212345678931234567894, -123.45E293 (if not written as string).after all that i can see that only a regexp could do the job 100% correct. we could use version 4) andadd the characters '-.+E' to the allowed ones. but it could be interpreted wrong in some cases, likea string 'E123' or '1-1' or '9+9+9+9'.i've requested help from take 5) (ASkwar@DigitalProjects.com) so let's see what we get.feel free to replace it with another one. make sure it returns a real bool, thanx.
|
| Parameter |
|
|
| Returns |
bool |
|
decimalToFraction |
|
private void decimalToFraction( $number )
|
| |
A simple function that converts numbers with decimal remainders to numbers with fractional remainders.
example: decimalToFraction(1.2) => 1 1/5
|
| Parameter |
|
|
$number |
|
|
Warning: documentation is missing. |
|
| Returns |
void |
| Copyright |
gpl J.A. Greant (zak@nucleus.com) Version 1: June 9, 2000 http://www.zend.com/codex.php?id=175&single=1 |
|
is_numeric |
|
private void is_numeric( $n )
|
| |
Warning: documentation is missing.
|
| Parameter |
|
|
$n |
|
|
Warning: documentation is missing. |
|
| Returns |
void |
|
is_num |
|
private void is_num( )
|
| |
Warning: documentation is missing.
|
| Returns |
void |
|
|
Private Constant Details |
BS_NUMBER_VERSION
define( BS_NUMBER_VERSION, >>4.0.$x$<< )
Case: default: case sensitive
|
|
|
|
|
|
| PHPDoc 1.0beta |
