How can you add two numbers in PHP?

How can you add two numbers in PHP? That depends on how big your two numbers are. If you have numbers in the normal integer/double range, it is sufficient to use the “+” operator. You use it as follows: echo 1 + 2; // write “3” in the output If the numbers get bigger, you will have to use the …

Which PHP framework would you recommend?

In my opinion, Laravel and Symfony too. But everything depends on the requirement profile and personal needs, on the development environment. Laravel is one of the most popular and increasingly popular frameworks of 2017. And by the way, the open source “Eco-System” – under “Laravel” a number of products like Laravel Envoyer, Forge, Spark, Homestead and other services are collected. …

What makes Linux better than Windows?

  Linux is no better than Windows. Windows is no better than Linux. Such sweeping statements are simply pointless. I had hoped that someone would mention that in the answers. Linux is better in the following cases: 1. if you run a (web) server. Because of the great security features (among others). 2. if you have old hardware. Because it …

[PHP] Return the amount of times a number occurs in an array

This exercise is about creating a function that can return the amount of times a number occurs in an array. $zahlen1 = array(4,4,3,5,6,7,4,4); $zahlen2 = array(1,2,6,6,3,4,5,5,5,6,7,8,6,9); $zahlen = $zahlen2; echo longestrow($zahlen); function longestrow($zahlen){ $amount = 0; $flag = 0; foreach ($zahlen as $value) { foreach ($zahlen as $value2) { if ($value === $value2) { $amount++; if ($amount > $flag) { …

How to calculate the Median in Mysql

Since there are no built in functions to calculate the median value. You need to calculate it yourself. An important thing to know we refer twice to the country table. Once with x and once with y since we need it in our calculation.   set @median_density = (SELECT x.population/x.area from Mondial.country x, Mondial.country y GROUP BY x.population/x.area HAVING SUM(SIGN(1-SIGN(y.population/y.area-x.population/x.area)))/COUNT(*) …

Mondial SQL Database Questions and Answers

You can find the Mondial SQL database here List all the countries that are part of Nato SELECT distinct c.name FROM Mondial.country c left join Mondial.isMember m on c.code = m.country where m.organization like ‘%nato%’; List all countries that are part of and organisation that was founded before 1960 SELECT * FROM Mondial.country c left join Mondial.isMember m on c.code …

PHP: Basic Programming Heap Sort algorithm

Exercise from W3schools Write a PHP program to sort a list of elements using Heap sort. In computer science, heapsort (invented by J. W. J. Williams in 1964) is a comparison-based sorting algorithm. Heapsort can be thought of as an improved selection sort: like that algorithm, it divides its input into a sorted and an unsorted region, and it interactively …