All Questions

3
answers

Create table vertically with PHP

I'm starting with PHP and I have to do an exercise to show calculated results from an array in a table. I get the data but at the time of creating the table I do not give the formula to do it horizontally. I mean, I get to do it like this:...
asked on 22.10.2017 / 16:46
1
answer

Android: Error: void android.widget.TextView.setText (java.lang.CharSequence) 'on a null object reference

Good morning, please support me with this code that I try to run but it throws me error:    Error: void android.widget.TextView.setText (java.lang.CharSequence) '   on a null object reference The code is as follows: package bernascompan...
asked on 21.10.2017 / 11:11
2
answers

Refresh or redirect a running page

I am making a shopping cart, I have the product table formed, with the values that I am adding in a session variable .. the problem is that every time I add a product, it sends me the beginning of the page, and I would like that either send me t...
asked on 03.01.2018 / 22:01
1
answer

Upload multiple images to the server with PHP

I have a fragment of code that makes the upload of files, in this case images to the server and then saves the record in the database [MySQL], the operation works but sometimes I find it slow when trying to upload 2 or 3 images, which seems stra...
asked on 19.10.2017 / 14:21
1
answer

Decimals in mvc

How about. I am developing a web application in Mvc, and it is a medical calculator, where the user enters certain values, the account is made, and a value is returned. In the cases where the entry has to be with decimals, I get the following er...
asked on 22.12.2017 / 01:12
1
answer

Is there an alternative for Raspberry pi and connect SSH under NAT?

Dear, I am working on a project with RPI3 and connected to a 3G Mobile Broadband, which has blocked ports SSH 22, is there any option to create a tunnel via web, to be able to access the SSH of the machine? Greetings.     
asked on 18.12.2017 / 18:41
1
answer

Problem in condition query SQL MYSQL

Good mates I have a problem with an SQL query in MYSQL, I explain to you how are the tables, I have a table of Events that basically are birthdays, they have among other things a start time and a Finally, I have another table of Materials th...
asked on 29.12.2017 / 23:55
1
answer

Why do I have to put two references to the GoogleMaps APIs?

This is one of many questions or queries I have about the implementation of Google Maps on a web page. The first one is that by entering the following line with my APIKEY the map IS NOT SHOWN: <script src="https://maps.googleapis.com/maps/a...
asked on 20.12.2017 / 18:27
2
answers

Display data without repeating

I need help with my sql query. My query is: select * from matricula and show me this information: nummatri fechamatri dnialum idnivel idgrado idsecc año 3 2017-12-20 12357890 2 7 14 2018...
asked on 22.12.2017 / 02:36
1
answer

Progress Bar Dynamic Bootstrap MySQL

Good day forum, a help to generate a ProgressBar Dinámico with data extracted from a query mysql . Progress Bar <?php foreach($clientes as $cliente): $id = $cliente->identificador;...
asked on 22.12.2017 / 18:21