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Luventas Web Design

A new blog for developers in PHP, Java and mobile Development

Java
Textdateien mit Spring Batch erzeugen
6 September 2011
iOS / Objective-C
Include Facebook „Post to your wall“ in your App
7 September 2012
General
Repariere deine NVIDEA Notebook GPU / Grafikkarte
1 Juni 2012
PHP
Create an Excel document with PHP
3 Juni 2011
PHP
PDF creation by PHP
21 Mai 2011
Java
Send Email by Spring batch with variable attachments
7 August 2011

Google Chrome: Problems with inaccurate „enctype“-data in HTML forms

Posted on 27 Mai 201127 Mai 2011 By luventas Keine Kommentare zu Google Chrome: Problems with inaccurate „enctype“-data in HTML forms
General

Following Problem was happened to me:

I had a HTML form to send text data to the webserver. Because it was only text data, I used the enctype „text“.

<form name="formname" enctype="text" method="post" action="saveData.php">

This works in every browser like IE, Firefox and Safari. But I never tested it in the Google Chrome browser.

The form had some mandatory fields. If not all of these fields are filled, the not filled fields are colored red and the hint is shown, that all mandatory fields must be filled. Then a user called me and told me, that he is not able to register. He filled all fields and pressed the register button. Then the form was shown again, all fields were empty and all mandatory fields were colored red.

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Create a database from your GEDCOM file

Posted on 27 Mai 201114 Juni 2011 By luventas 7 Kommentare zu Create a database from your GEDCOM file
Genealogy, Perl

You are interested in creating your own webpage to publish your family tree to the world? Then you need to insert your data in a database. The problem: most programms are creating a gedcom file as global file type or other files formats specially for the software you are using but there is no software to create a database. Nearly all genealogical researchers uses then one of the well known platforms to publish there genealogical data to the world wide web. But what to do, if you do not want to upload your data to one foreign platform? Then you have to start again from the beginning to type your data into a database.

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Create thumbnail from image with PHP

Posted on 25 Mai 201125 Mai 2011 By luventas Keine Kommentare zu Create thumbnail from image with PHP
PHP

Everybody who has a webpage where it is possible to upload images (for example a member picture for member profile) knows this problem: Digital cameras in these days creates pictures with high resolution but also with a big file size. Most pages forbid to upload pictures like this and restrict the size of the picture files.

You can create a good workaround for that. One version is to store the original file and create an additional thumbnail, the other way is, to store only the thumbnail, if you have less space on your webserver.

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Create Random Password with PHP

Posted on 23 Mai 201125 Mai 2011 By luventas 1 Kommentar zu Create Random Password with PHP
PHP

If you create a webpage, where users can register themself, it is good to send them for the first login a radom created password. This helps you to check, if the entered email address is valid. without a valid email address they are not able to login into your service.

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PDF creation by PHP

Posted on 21 Mai 201125 Mai 2011 By luventas 1 Kommentar zu PDF creation by PHP
PHP

I tried a lot to create PDF files by using PHP frameworks. For Java I’m using iText, but there is no interface to use iText by a PHP server. So I googled a lot and there are several frameworks to create these files. I tried them all an my opinion is, that domPDF is the best one, becase it is the easiest of all to use.

To create a PDF by domPDF, I only have to create a normal HTML page. This page I have to give to the renderer of domPDF and this renderer creates a PDF file out of this HTML code which is a one to one copy of the HTML page.

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Start of Luventas Web Designs Blog

Posted on 19 Mai 201125 Mai 2011 By luventas 2 Kommentare zu Start of Luventas Web Designs Blog
General

In this days it is absolutely necessary to have a good blog on your site and I nearly waited to long for creating my own. So I started today with a new blog on my page to inform you about interessting articles and other „good to know“-Themes. Greetings Carsten Fröhlich

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