David Ansermot

26avr/110

PHP – Generate Luhn checksum (for valid account numbers)

Here's a function to calculate the Luhn checksum of a 15 digits account number (the checksum'll be the 16^th digit) :

public function luhnChecksum($accountNumber) {
                
        // Buffer
        $sum = 0;
        
        // Process each digit
        for ($i = 0; $i < 15; $i++) {
                $digit = $accountNumber{$i};
                
                // each 2 digits
                if ($i % 2 == 0) {
                        $double = $digit * 2;
                        
                        // if over 10, sum of the 2 digits
                        if ($double > 10) {
                                $double = (string)$double;
                                $sum += ((int)$double{0} + (int)$double{1});
                        } else {
                                $sum += $digit;
                        }
                } else {
                        $sum += $digit;
                }
        }
        
        // Euclidian division
        $rest = $sum % 10;
        
        // luhn key  
        $key = 10 - $rest;
        
        return $key;
}

Article for teaching purposes.
I can not in any way be held liable for its use

Taggé comme: Account, Algorithm, Checksum, Luhn, PHP, Snippet Aucun commentaire

18avr/110

TYPO3 – Change files/images upload limit

Today I'll explain how to change the limit for files, images and other medias upload.

To do the trick, you have multiple changes to make.

Taggé comme: Apache, PHP, Trick, Tutorial, TYPO3, Upload Lire la suite

25fév/110

HowTo Detect SSL in PHP

Here's a little function I had to use today to detect SSL for payments.
It detects if SSL is on, if not, it redirect the user to the SSL url.

if (!isset($_SERVER['HTTPS']) || $_SERVER['HTTPS'] != 'on') {
        $domain = 'https://'.$_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'];
        header('Location: '.$domain);
        exit;
}

Enjoy

Taggé comme: HowTo, HTTPS, PHP, Security, Snippet, SSL Aucun commentaire

3nov/100

Joomla – Detect homepage in extensions

Here's a little tip to detect, in your Joomla extensions, if the Frontend user is on the Homepage.

if (JURI::base() == JURI::current()) {
     // Your code for Homepage
}

Tell me if it bugs for you, but for me on 1.5.21 it's ok

Taggé comme: Code, Extensions, Frontend, Homepage, Joomla, PHP, Source Aucun commentaire

28oct/100

SabreDAV 1.3.0 available

The new version of SabreDAV comes out with a big change: it is the performance gain for the operations of most trees.

As a reminder, you can easily add SabreDAV WebDAV PHP applications. It is intended to cover the full standard to enable integration using this API easily.

Of course, this version also brings many other changes such as:

Add a layer of tree cover in the Subject
Added a new method
Modifications to some classes
Patches
Etc.

SabreDAV 1.3.0

Taggé comme: Download, Patch, PHP, Release, SabreDAV, Update Aucun commentaire

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David Ansermot Web Developer / TYPO3 Integrator

PHP – Generate Luhn checksum (for valid account numbers)

TYPO3 – Change files/images upload limit

HowTo Detect SSL in PHP

Joomla – Detect homepage in extensions

SabreDAV 1.3.0 available

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