Questions tagged as 'poo'

Tagged questions
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render views with call_user_func_array? php

Hello friends, my problems is the following .. I have defined a MVC logic in which at the beginning I parsed the url with htaccess. for the url to be defined in the following way (controller / methodo / parameters1 / parameter2). Well this is...
asked by 21.04.2018 / 19:10
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Problem with sources in FPDF

I am trying to generate a PDF, if I created everything in the same directory there is no problem, the problem comes when I call the function that will generate this doc.    Warning: include (font / helveticab.php): failed to open stream: No s...
asked by 19.04.2018 / 14:07
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Read a CSV file and create an object with its data

I need a little help. I have a CSV file and I am reading it like this: public class LectorDeArchivosCSV { private List<Alumno> listaAlumnos; public LectorDeArchivosCSV() { listaAlumnos = new ArrayList<>(); } public List<Al...
asked by 16.04.2018 / 00:19
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Label does not return the value extracted from a database

I'm trying to get a value from a base by means of a query and show it through a label all this happens at the click of a button try{ String carne = txtcarnet.getText();//Se crea un string que captura el carnet ingresado Restablecer_Co...
asked by 26.03.2018 / 23:15
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Error: Call to a member function query () on null

I'm doing a crud with MVC and POO following a course and I get the following error I take a while trying to solve the problem but I can not find a way, this is the file where the error marks me class EntidadBase{...
asked by 09.03.2018 / 00:34
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Alert in Swicth Case in php

I want to be able to show an alert that says please select an option when no radio option has been selected. the code that I have test is as follows. calculo.php class Calculadora{ public function calcular($n1, $n2, $operador) {...
asked by 08.03.2018 / 18:29
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flows Binary files

I'm making an application so that through a menu, it allows you to: Add. List. Search. Delete. Exit. The fact is that more or less the first two options I have made, but with errors: In option 1, I need to say that if I say I...
asked by 26.02.2018 / 20:31
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How to get the attributes of another object with OrmLite in android?

I am working with OrmLite on android, I can obtain the attributes of my Debtor object with this code, but if I access the Debt object from Debtor, it returns null the attributes. On the other hand, if I access directly from the Debt object if th...
asked by 02.03.2018 / 17:48
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What is the difference between using a global variable and a Singleton? Java

Very good, my dear colleagues, I wanted to ask you about the difference, advantages and disadvantages between using a global variable or the singleton pattern. Then I leave a bit of code for you to see what I mean. I understand that the gl...
asked by 28.02.2018 / 18:34
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how to avoid duplicate email registration PHP 7 - MYSQL-PDO

First of all good day my dear ones, well I have a small problem when developing a registration system since I am using VMC with PHP7 , MYSQL .htaccess and PDO. The problem is that I can not avoid the duplicates of email...
asked by 29.01.2018 / 18:13