Gain insights into modern PHP by delving into POST requests, forms, sessions, and redirects to build a CRUD app with authentication, focusing on pure PHP without frameworks.

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PHP for the Web is a terrific introduction on how to use modern PHP effectively. While there is a lot of material out there about building applications with PHP, most of them focus on using a framework like Laravel or Symfony. By working with pure PHP, you will be able to focus on the core ideas instead of how a particular framework implements them.

In this course, you will learn how to use multiple web technologies like POST requests, forms, sessions, and redirects to build a CRUD application with an authentication system.

By the end, you will have all the ingredients at your disposal to go out and build stunning, dynamic PHP web applications.

PHP for the Web: Learn PHP without a Framework

What does `['foo' => 'bar']` look like when encoding it with `json_encode()`?

<p>What does <code>['foo' =&gt; 'bar']</code> look like when encoding it with <code>json_encode()</code>?</p>


When processing submitted form data, what is the right order of actions?
1. Ensure that strings are strings, integers are integers, etc.
2. Throw errors when the form values don't look good.
3. Add fields that the browser didn't submit.

<p>When processing submitted form data, what is the right order of actions?</p>
<ol>
<li>Ensure that strings are strings, integers are integers, etc.</li>
<li>Throw errors when the form values don’t look good.</li>
<li>Add fields that the browser didn’t submit.</li>
</ol>


The browser will ask for a confirmation before resending the form data.

If you don't redirect after processing a `POST` request, what happens if you refresh the page?

<p>If you don’t redirect after processing a <code>POST</code> request, what happens if you refresh the page?</p>


What is the submitted value if the user leaves this field empty: `<input name="name" type="text">`?

<p>What is the submitted value if the user leaves this field empty: <code>&lt;input name=&quot;name&quot; type=&quot;text&quot;&gt;</code>?</p>


`$_POST['name']` will contain `'Matthias'`.

What is the submitted value if the user fills in "Matthias" in this field: `<input name="name" type="text">`?

<p>What is the submitted value if the user fills in “Matthias” in this field: <code>&lt;input name=&quot;name&quot; type=&quot;text&quot;&gt;</code>?</p>


`$_POST['check_me']` will contain `null`.

What is the submitted value if the user puts a checkmark in this field: `<input name="check_me" type="checkbox" value="1">`?

<p>What is the submitted value if the user puts a checkmark in this field: <code>&lt;input name=&quot;check_me&quot; type=&quot;checkbox&quot; value=&quot;1&quot;&gt;</code>?</p>


What is the submitted value if the user does **not** put a checkmark in this field: `<input name="check_me" type="checkbox" value="1">`?


<p>What is the submitted value if the user does <strong>not</strong> put a checkmark in this field: <code>&lt;input name=&quot;check_me&quot; type=&quot;checkbox&quot; value=&quot;1&quot;&gt;</code>?</p>


Take a quick quiz to test your understanding of the concepts covered in this chapter.

Getting Started

Serving Resources

Serving PHP Scripts

Forms

Cookies

Sessions

Authentication

PHP Project Structure

CRUD Part 1: Create

CRUD Part 2: The Rest

File Uploads

Error Handling

Automated Testing

Conclusion

Quiz on CRUD Part 1