bcdiv
Heres an useful IBAN generate function:
<?php
function controleer_iban($iban) {
$iban = str_replace(array(" ", " ", " ", "\t"), "", $iban);
$iban = strtoupper(str_replace(" ", "", $iban));
if(strlen($iban)>34)
return false;
$acceptabel = "A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 1 2 3 4 5 6 7 8 9 0";
$acceptabel = explode(" ", $acceptabel);
for($i = 0; $i<strlen($iban); $i++) {
if(in_array(substr($iban, $i, 1), $acceptabel) === false)
return false;
}
$alfa = "A B C D E F G H I J K L M N O P Q R S T U V W X Y Z";
$alfa = explode(" ", $alfa);
for($i = 1; $i<27; $i++) {
$alfa_replace[] = $i+9;
}
$controlegetal = str_replace($alfa, $alfa_replace, substr($iban, 4, strlen($iban)-4).substr($iban, 0, 2)."00");
$controlegetal = 98 - (int)bcmod($controlegetal,97);
if((int)$controlegetal === (int)substr($iban, 2, 2))
return true;
else
return false;
}
?>
bcmod
(PHP 4, PHP 5)
bcmod — Dzieli w module liczbę o dużej precyzji
Opis
string bcmod
( string $lewy_operand
, string $moduł
)
Zwraca moduł (resztę z dzielenia) z liczby lewy_operand dzielonej przez moduł .
Przykłady
Example #1 bcmod() przykład
<?php
echo bcmod('4', '2'); // 0
echo bcmod('2', '4'); // 2
?>
Zobacz też:
add a note
User Contributed Notesbcmod
mcuelenaere at gmail dot com
21-Dec-2007 10:00
21-Dec-2007 10:00
sebas at stageprikbord dot nl
27-Mar-2007 04:53
27-Mar-2007 04:53
function bc_is_even($int_str) {
return (int)!($int_str & 1);
}
More resource efficient version of 'bc_is_even'.
jmullan at visi dot com
25-Jul-2006 12:12
25-Jul-2006 12:12
<?php
function bc_is_even($int_str) {
if (0 < strlen($int_str)) {
return !((substr($int_str, -1)) % 2);
} else {
// error
return 0;
}
}
?>
cristianDOTzuddas]NOSPAM[gmailDOTcom
24-Jul-2005 12:45
24-Jul-2005 12:45
BC Math is really cool, but has only 10 functions. So we MUST write other BC functions and share the code.
Here is a simple even/odd number check.
<?
function bc_is_even($int_str) {
if (strlen($int_str)>0) {
if (bcmod($int_str, 2)==='0')
return true;
else
return false;
}
else // error
return 0;
}
?>
lauris at night dot lt
23-Dec-2003 05:04
23-Dec-2003 05:04
<?php
/**
* my_bcmod - get modulus (substitute for bcmod)
* string my_bcmod ( string left_operand, int modulus )
* left_operand can be really big, but be carefull with modulus :(
* by Andrius Baranauskas and Laurynas Butkus :) Vilnius, Lithuania
**/
function my_bcmod( $x, $y )
{
// how many numbers to take at once? carefull not to exceed (int)
$take = 5;
$mod = '';
do
{
$a = (int)$mod.substr( $x, 0, $take );
$x = substr( $x, $take );
$mod = $a % $y;
}
while ( strlen($x) );
return (int)$mod;
}
// example
echo my_bcmod( "7044060001970316212900", 150 );
?>