The Programming Expert

Solve everyday coding problems with clear, copy-paste examples

Get working snippets and short guides for Python, JavaScript, PHP, HTML, and jQuery. No fluff—just solutions you can use right away.

Browse code snippets

What you get

Every snippet on this site does one thing: reverse a string, trim whitespace, rotate an image, get the current month from a date. You get the code, a short explanation, and optional notes (e.g. PHP 7 vs 8, or when to use padStart vs toFixed). No long tutorials or sign-up walls—just open a page, copy the code, and adapt it.

We cover Python, JavaScript, PHP, HTML, and jQuery. If you're new to programming, start with Learn to Code for Python and JavaScript, then use Code Snippets as a reference when you're building something.

What we cover

Each section focuses on one language or stack. You'll find string and number tricks, DOM and CSS from JS, file and date handling in PHP and Python, and reusable HTML patterns.

Languages and topics on this site
Language	Topics	Browse
Python	Strings, lists, dicts, files, dates, math	Python snippets
JavaScript	Numbers, strings, arrays, DOM, events, CSS	JavaScript snippets
PHP	Strings, arrays, dates, files, forms	PHP snippets
HTML	Forms, layout, media, accessibility	HTML snippets
jQuery	Selectors, DOM, events, AJAX	jQuery snippets

Why use code snippets?

When you're stuck on a small task—formatting a date, splitting a string, or toggling a class—you don't need a full course. You need one clear example that works. Our snippets are written to be dropped into your project and adjusted. We note version differences (e.g. PHP 8 vs 7) and when to prefer one approach over another so you can choose without guessing.

All examples are free to use. No accounts, no paywalls. Bookmark the pages you use often or search the site when you need something new.

Browse by language

JavaScript jQuery Python PHP HTML

Featured examples

Rotate an image with JavaScript

Use transform: rotate() and a click handler to spin an image by fixed degrees.

element.style.transform = "rotate(" + degrees + "deg)";

More JavaScript examples

Reverse a string in Python

Reverse a string with slicing or a simple loop. No extra modules needed.

reversed = s[::-1]

More Python examples

Check if string contains substring in PHP

Use str_contains() (PHP 8+) or strpos() for older versions.

str_contains($haystack, $needle);

More PHP examples

Learn how to program

Explore our guides and snippets by topic:

Python

JavaScript

PHP

HTML

Quick reference

Frequent tasks and where to find them:

Common tasks and links
Task	Language	Where
Reverse string, trim, split	Python, JavaScript, PHP	Code Snippets by language
Round numbers, format decimals	JavaScript, PHP, Python	JavaScript, PHP, Python
DOM, events, change CSS	JavaScript, jQuery	JavaScript, jQuery
Dates, current month/year	PHP, Python, JavaScript	PHP, Python
Forms, inputs, validation	HTML, PHP, JavaScript	HTML, PHP
First steps in programming	Python, JavaScript	Learn to Code

Quick links

Code Snippets — browse all examples by language. Learn to Code — first steps with Python and JavaScript. About — who we are and how to use the site. Write for Us — contribute your own snippets.