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Sometimes we want to know if the webpage was fetched over an SSL connection (e.g. the URL begins with https:// instead of http://). This way, if an end-user is accessing an insecure version of our site, we can redirect them to the secure version. The following PHP function called `no_ssl()` …

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For some reason, PHP class constants don't play nicely with inheritance. For example, suppose you have the following code: class Foo { const VAR = 'foo'; public function __construct() { echo self::VAR; } } class Bar extends Foo { const VAR = 'bar'; } // This will actually print out …

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## Introduction ## The Hyper Text Transfer Protocol (`HTTP`) is one of the most common communication protocol on the internet. There are three major versions of HTTP that you should be aware of: **1.1**, **2.0**, **3.0**. Versions 1.1 and 2.0 are widely used today, so this tutorial mainly focuses on …

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## Introduction ## When working on Java applications, it is very likely that you will run into JDBC at some point. While you are unlikely to have to work directly with JDBC when using frameworks, it is still important to know how the connection is established and how queries are …

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Hi. Please could someone help me understand what's happening here. I have a MySQL database which has a table with some data in the following format: 2022-03-15 06:55:39:<br/>LineOfSight:<br/>java.lang.Exception:<br/> UNAVAILABLE TELEMETRY BR$0 The field collation is utf8 and the data is stored as text. This data is provided via a 3rd …

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I am driving an html site from my network drive in my office that can be viewd on LAN. I need to put a blog kind of section on my site so people who visite this site can leave there comments on it and all can see thses comments. Can …

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Hello, I get this error message: syntax error, unexpected '(', expecting variable (T_VARIABLE) or '{' or '$' When running this code: ` Rp. <div id="total"></div> ``` <script> $("#total").html({<?php number_format($("#subtot").val(), 0, '', '.'); ?>}); </script> ``` ` Any idea why?

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Hello everyone! I am wondering how I can access the ending of my url address. For exampel: www.castingvault.eu/willy And I wand the name "willy" only and then process and use it in my php code. Usually you write the url like this: www.castingvault.eu/members.php?mem=willy and the following is how to access …

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Hello I am building a database (i prefer MongoDB) that i will store over 100 mil ipv4 and ipv6 records for logging purposes. Data sample : 1.1.1.1 -> 0x1010101 1.2.3.4 -> 0x1020304 34.53.63.25 -> 0x22353f19 255.255.255.255 -> 0xffffffff 0001:0001:0001:0001:0001:0001:0001:0001 -> 0x10001000100010001000100010001 1111:1111:1111:1111:1111:1111:1111:1111 -> 0x11111111111111111111111111111111 2345:0425:2CA1:0000:0000:0567:5673:23b5 -> 0x234504252ca1000000000567567323b5 2345:0425:2CA1::0567:5673:23b5 -> 0x234504252ca1000000000567567323b5 …

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Sometimes we have a need to take a simple PHP array and represent it as an encoded string. One use case that we have for this at DaniWeb is when a new user signs up, and we ask them to click on a link that was sent to them via …

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## Introduction I recently bought a new laptop. Since I haven't used VB.Net in years (nothing but Python now) I did not install Visual Studio. That meant rewriting all my VB apps in Python/wxPython. One of my most often used apps was a shell extension I wrote to add a …

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[Ranged Numeric Types in C++](https://github.com/Schol-R-LEA/Ranged-Numeric-Types-for-CPP) I've started writing a simple template class for automating range checking in specialized numeric types, inspired by the ranged types in languages such as Pascal and Ada. At the moment it is mainly meant for integer types, though I've made it flexible enough that it …

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You must write a small application in JAVA for items and their prices. Your program must: 1. Create an array of item names. Use the following item names: Bread, Milk, Butter, Chips, Honey, Soap, Towel, Carrots, Beans, Samp, Dress, Pants, Shoes, Socks. 2. Create an array of item prices. Use …

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I am making speech to text app in C# window form it was working fine and running in vs but I want to make I have add a button in my application I want to make when I click on the button it start recognizing when I clicked on the …

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Hello All, I am a software developer and got the opportunity to work on a large web development project. I want to know which source allow efficient data storage feature between file system and dbms in a large project. I have asked this query on Quora and according to this …

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Hey guys I managed to get some code what works fine but it uses console application I have tried to convert it by hand and change things around to get it to work but with no avail! I'm certain it should be simple but I may be wrong :( Thanks …

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I need a quick solution that will convert HTML doc to PDF and still maintain the same look and feel with pre-populated data and also maintain links in the PDF doc. Any solutions?

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Working on a game for a friends daughter for her 6th birthday. Its a scrolling game where the player will be Snoopy and they'll be flying around on his doghouse collecting Woodstock (Which are flying around the screen) for each level (There will be 4 levels). At the end of …

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Hello, I've been programming for at least 5 years now, but I've only done freelance programming projects for pay. I was wondering what to expect from a company position as a software QA tester using C#. What kind of skills are important that aren't immediately obvious, and will it be …

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A little while ago, I wrote a [tutorial](https://www.daniweb.com/programming/web-development/tutorials/537376/sanitize-php-user-input-strings) about how important it is to sanitize PHP user input strings. Not only is it important to sanitize user input being fed into a database query, but it's also important to sanitize user input being displayed to the end-user to generate valid …

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A PHP array is essentially a stack of elements that can be used to denote a list, represent a collection of variables, etc. You can easily use loops to iterate over each element of an array. As PHP is a loosely typed language, all of the elements of an array …

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I want to set a max width for all pages on a web site but have no idea where to set it in the CSS file. I tried setting it in both the body section and the html section without success. I'd appreciate some help on this. Thanks in advance.

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By default, PHP's clone keyword just creates a shallow copy of an object, and doesn't work as desired if the object contains properties that are also objects, because it doesn't create real copies of those objects but rather just pointers to the initial version of them. This function creates a …

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DaniWeb is built on top of the Codeigniter 3.1.x PHP framework. Although I probably should have built it as a CI model, here is the database library that we are using. You can see it mainly serves as a wrapper for CodeIgniter's built-in database class. You can see we use …

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## Introduction ## When following tutorials on Daniweb, you might have run into one that requires knowledge about **Dependency Injection** as a prerequisite. People might also sometimes use the term **Inversion of Control** interchangeably with DI. These terms are related to one another, but they are not the same. In …

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## Introduction ## Java annotations are often used to provide extra information for compilers, IDEs, and build tools. The extra information is often used to enhance the development cycle, such as reducing boilerplate, eliminating repetitive code, or warning against unsafe usage or mistakes. This tutorial aims to teach you the …

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I want to make a pdf file in php. I write code like this: <?php require_once __DIR__ . '/vendor/autoload.php'; include('conn.php'); $res = mysqli_query($conn, "select * from smash"); if (mysqli_num_rows($res) > 0) { $html = '<table>'; $html = '<tr><td>ID</td><td>Name</td><td>FatherName</td><td>Address</td><td>Phone</td><td>Class</td><td>Qualification</td><td>Branch</td><td>rollno</td></tr>'; while ($row = mysqli_fetch_assoc($res)) { $html .= '<tr><td>' . $row['id'] . '</td><td>' …

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The End.