w3resource

PHP Exercises, Practice, Solution

What is PHP?

PHP (recursive acronym for PHP: Hypertext Preprocessor) is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML.

The best way we learn anything is by practice and exercise questions. We have started this section for those (beginner to intermediate) who are familiar with PHP.

Hope, these exercises help you to improve your PHP coding skills. Currently, following sections are available, we are working hard to add more exercises. Happy Coding!

Note: It's fine if you are playing around with PHP codes with the help of an online PHP editor, to enjoy a full-fledged PHP environment (since online editors have several caveats, e.g. embedding PHP within HTML) up and running on your own machine is much better of an option to learn PHP. Please read our installing PHP on Windows and Linux if you are unfamiliar to PHP installation.

List of PHP Exercises :

PHP Challenges :

Note : You may accomplish the same task (solution of the exercises) in various ways, therefore the ways described here are not the only ways to do stuff. Rather, it would be great, if this helps you anyway to choose your own methods.

Popularity of Programming Language
Worldwide, Jan 2021 compared to a year ago:

Rank Change Language Share Trend
1 Python 30.44 % +1.2 %
2 Java 16.76 % -2.0 %
3 Javascript 8.44 % +0.3 %
4 C# 6.53 % -0.7%
5 up arrow C/C++ 6.33 % +0.3 %
6 down arrow PHP 6.05 % -0.2 %
7 R 3.87 % +0.1 %
8 Objective-C 3.71 % +1.2 %
9 Swift 2.14 % -0.3 %
10 TypeScript 1.78 % -0.0 %
11 Matlab 1.74 % -0.1 %
12   Kotlin 1.7 % +0.0 %
13 up arrow Go 1.33 % +0.1 %
14 down arrow VBA 1.2 % -0.2 %
15 down arrow Ruby 1.12 % -0.2 %
16 up arrow Rust 1.03 % +0.3 %
17 down arrow Scala 0.72 % -0.3 %
18 down arrow Visual Basic 0.69 % -0.2 %
19 up arrow Lua 0.64 % +0.3 %
20 up arrow Ada 0.63 % +0.3 %
21 up arrow Dart 0.56 % +0.1 %
22 down arrow Abap 0.51 % +0.0 %
23 down arrow Perl 0.48 % -0.1 %
24 up arrow Julia 0.38 % +0.1 %
25 down arrow Groovy 0.37 % -0.1 %
26 down arrow Cobol 0.35 % +0.0 %
27 down arrow Haskell 0.27 % -0.0 %
28 Delphi 0.26 % +0.0 %

Source : http://pypl.github.io/PYPL.html

TIOBE Index for January 2021

Jan 2021 Jan 2020 Change Programming Language Ratings Change
1 2 up arrow C 17.38% +1.61%
2 1 down arrow Java 11.96% -4.93%
3 3 Python 11.72% +2.01%
4 4 C++ 7.56% +1.99%
5 5 C# 3.95% -1.40%
6 6 Visual Basic 3.84% -1.44%
7 7 JavaScript 2.20% -0.25%
8 8 PHP 1.99% -0.41%
9 18 up arrow R 1.90% +1.10%
10 23 up arrow Groovy 1.84% +1.23%
11 15 up arrow Assembly language 1.64% +0.76%
12 10 down arrow SQL 1.61% +0.10%
13 9 down arrow Swift 1.43% -0.36%
14 14 Go 1.41% +0.51%
15 11 down arrow Ruby 1.30% +0.24%
16 20 up arrow MATLAB 1.15% +0.41%
17 19 up arrow Perl 1.02% +0.27%
18 13 down arrow Objective-C 1.00% +0.07%
19 12 down arrow Delphi/Object Pascal 0.79% -0.20%
20 16 down arrow Classic Visual Basic 0.79% -0.04%

Source : https://www.tiobe.com/tiobe-index/

List of Exercises with Solutions :

[ Want to contribute to PHP exercises? Send your code (attached with a .zip file) to us at w3resource[at]yahoo[dot]com. Please avoid copyrighted materials.]

List of Exercises with Solutions :



PHP: Tips of the Day

PHP: How to get a variable name as a string in PHP?

You could use get_defined_vars() to find the name of a variable that has the same value as the one you're trying to find the name of. Obviously this will not always work, since different variables often have the same values, but it's the only way I can think of to do this.

Edit: get_defined_vars() doesn't seem to be working correctly, it returns 'var' because $var is used in the function itself. $GLOBALS seems to work so I've changed it to that.

function print_var_name($var) {
    foreach($GLOBALS as $var_name => $value) {
        if ($value === $var) {
            return $var_name;
        }
    }

    return false;
}

Edit: to be clear, there is no good way to do this in PHP, which is probably because you shouldn't have to do it. There are probably better ways of doing what you're trying to do.

Ref : https://bit.ly/37qFimU