Drawing a Line Graph with MySQL Data using Chart.js in PHP

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The Problem: Creating a Line Graph

You have an attendance dataset stored in a MySQL table, and you want to visualize this data as a line graph. The dataset consists of the following information:

Date: The days of attendance (from December 10th to December 20th)

Attendance: The number of attendees for each corresponding day

Step-by-Step Solution

Let's break down the solution into clear sections.

Step 1: Setting Up the Database Connection

First, establish a connection to your MySQL database. Here is how you can do this:

[[See Video to Reveal this Text or Code Snippet]]

Make sure to handle any connection errors:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Querying the Data

Next, you need to fetch the data from your MySQL table. In this case, you want both the dates and attendance levels.

Fetching Dates:

[[See Video to Reveal this Text or Code Snippet]]

Fetching Attendance:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Encoding the Data for JavaScript

Your next task is to format the data in a way that's compatible with JavaScript. In this case, it should be a simple array structure:

[[See Video to Reveal this Text or Code Snippet]]

[[See Video to Reveal this Text or Code Snippet]]

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

Feel free to modify the graph options to fit your needs, and happy coding!