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.

Learn PHP Without a Framework by Matthias Noback.png

php-setup.tar.gz

php-job

php-favi

php-pub

php-public

php-error

php-mult

php-tests

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

# Solution 

Here is a complete implementation of the problem. Let's have a look at it!

<?php
session_start();

include __DIR__ . '/pages/functions/task-crud.php';

<?php
$title = $title ?? 'PHP for the Web';
?>
    <!DOCTYPE html>
    <html lang="en">
    <head>
        <title><?php echo htmlspecialchars($title, ENT_QUOTES); ?></title>
        <link rel="stylesheet" href="/bootstrap.min.css">
    </head>
<body>
<div class="container">
    <nav class="navbar navbar-expand-lg bg-light">
        <ul class="navbar-nav">
            <li class="nav-item">
                <a class="nav-link" href="/list-tasks">Tasks</a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="/create-task">Create task</a>
            </li>
            <?php
            if (isset($_SESSION['authenticated_user'])) {
                ?>
                <li class="navbar-text">
                    You are logged in as:
                    <?php echo $_SESSION['authenticated_user']; ?>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="/logout">Log out</a>
                </li>
                <?php
            } else {
                ?>
                <li class="nav-item">
                    <a class="nav-link" href="/login">Log in</a>
                </li>
                <?php
            }
            ?>
        </ul>
    </nav>

import React from 'react';
import { shallow, configure } from 'enzyme';
import Adapter from 'enzyme-adapter-react-16';

configure({ adapter: new Adapter() });

import HelloWorld from './app';

var TestResult = function() {
    this.succeeded = false;
    this.reason = "";
    this.input = "";
    this.expected_output = "";
    this.actual_output = "";
}

export const executeTests = function() {

  var results = [];

  result = new TestResult();
  result.input = 'HelloWorld Component';
  result.expected_output = "span containing text 'Hello World'"

  let wrapper = shallow(<HelloWorld />);

  // Call your Challenge function here.

  let type = wrapper.type();
  let testSuccessful = true;
  let failureReason;

  if (type !== 'span') {
    testSuccessful = false;
    failureReason = "You need to render exactly one span HTML element";
  } else if (wrapper.props().children != "Hello World") {
     testSuccessful = false;
     failureReason = "You have rendered wrong message in your span element";
  }

  result.actual_output = wrapper.html();

  if (testSuccessful) {
    result.succeeded = true;
    result.reason = "Succeeded"
  } else {
    result.succeeded = false;
    result.reason = failureReason;
  }

  results.push(result);

  return results;
}


React

Dart

GoJS React

Typescript React

Vue.js

# Explanation

Let's go through the solution in detail.

## `pages/functions/task-crud.php` file

We copied the logic for creating the following functions from `create-task.php`:
* From **line 2** to **line 9**, we created a function for normalizing data.
* From **line 11** to **line 18**, we added a function for validating the normalized data.
* From **line 20** to **line 28**, we added another function for loading all the task data.
* From **line 30** to **line 36**, we created a function that saves all the tasks to `tasks.json` again.

Building on the existing functions, we created the following functions to aid in editing and deleting tasks, as mentioned in the challenge.
* From **line 38** to **line 49**, we added a function that loads all the tasks and iterates over them until it finds the one with the requested ID.
* At **line 48**, an exception is thrown when a task with the requested id is not found.
* From **line 51** to **line 62**, we created a function to save the modified task data.

Check out the solution to the challenge given in the previous lesson.

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

Project Solution: Edit and Delete Tasks

Solution

Explanation

`pages/functions/task-crud.php` file

Project Solution: Edit and Delete Tasks

Solution

Explanation

pages/functions/task-crud.php file

`pages/functions/task-crud.php` file