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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, Dec 2022 compared to a year ago:

`
Rank Change Language Share Trend
1 Python 28.34 % -1.0 %
2 Java 16.93 % -0.8%
3 Javascript 9.28 % +0.3%
4 C# 6.89 % -0.3%
5 C/C++ 6.64 % -0.3 %
6 PHP 5.19 % -1.0 %
7 R 3.98 % -0.1%
8 up arrow TypeScript 2.79 % +1.1%
9 up arrow Swift 2.23 % +0.6%
10 down arrow Objective-C 2.22% +0.1%
11 down arrow Go2.02% +0.7%
12 up arrow Rust 1.78 % +0.8%
13 down arrow Kotlin 1.71 % -0.0%
14 down arrow Matlab 1.61 % +0.0%
15 up arrow Ruby 1.12% +0.2%
16 down arrow VBA 1.08 % -0.1 %
17 Ada 0.96 % +0.2 %
18 up arrow Dart 0.85 % +0.4 %
19 down arrow Scala 0.69 % -0.0 %
20 up arrow Lua 0.65 % +0.3 %
21 down arrow Visual Basic 0.57 % -0.1 %
22 down arrow Abap 0.55 % +0.1 %
23 down arrow Perl 0.53 % +0.1 %
24 Groovy 0.36 % +0.0 %
25 Cobol 0.33 % +0.0 %
26 Haskell 0.25 % +0.0 %
27 up arrow Julia 0.24 % +0.0 %
28 down arrow Delphi/Pascal 0.2 % -0.0 %

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

TIOBE Index for December 2022

Dec 2022 Dec 2021 Change Programming Language Ratings Change
1 1 Python 16.66% +3.76%
2 2 C 16.56% +4.77%
3 4 up arrow C++ 11.94% +4.21%
4 3 down arrow Java 11.82% +1.70%
5 5 C# 4.92% -1.48%
6 6 Visual Basic 3.94% -1.46%
7 7 JavaScript 3.19% +0.90%
8 9 up arrow SQL 2.22% +0.43%
9 8 down arrow Assembly language 1.87% -0.38%
10 12 up arrow PHP 1.62% +0.12%
11 11 R 1.25% -0.34%
12 19 up arrow Go 1.15% +0.20%
13 13 Classic Visual Basic 1.15% -0.13%
14 20 up arrow MATLAB 0.95% +0.03
15 10 down arrow Swift 0.91% -0.86%
16 16 Delphi/Object Pascal 0.85% -0.30%
17 15 down arrow Ruby 0.81% -0.35%
18 18 Perl 0.78% -0.18%
19 29 up arrow Objective-C 0.71% +0.29%
20 27 up arrow Rust 0.68% +0.23%

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

[ 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 :



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PHP: Tips of the Day

PHP: Print PHP Call Stack

If you want to generate a backtrace, you are looking for debug_backtrace and/or debug_print_backtrace.

The first one will, for instance, get you an array like this one (quoting the manual) :

array(2) {
[0]=>
array(4) {
    ["file"] => string(10) "/tmp/a.php"
    ["line"] => int(10)
    ["function"] => string(6) "a_test"
    ["args"]=>
    array(1) {
      [0] => &string(6) "friend"
    }
}
[1]=>
array(4) {
    ["file"] => string(10) "/tmp/b.php"
    ["line"] => int(2)
    ["args"] =>
    array(1) {
      [0] => string(10) "/tmp/a.php"
    }
    ["function"] => string(12) "include_once"
  }
}

They will apparently not flush the I/O buffer, but you can do that yourself, with flush and/or ob_flush.

Ref : https://bit.ly/3nRoD29