Creating a Line Chart using mySQL in PHP

This article will show how to create a mySQL driven line chart using Charts 4 PHP Framework.

Step 1: Configure Database connectivity in config.php

define("CHARTPHP_DBTYPE","pdo");
define("CHARTPHP_DBHOST","mysql:host=localhost;dbname=testdb");
define("CHARTPHP_DBUSER","username");
define("CHARTPHP_DBPASS","password");
define("CHARTPHP_DBNAME","");

Step 2: Include Charts 4 PHP Library

include("../../lib/inc/chartphp_dist.php");
$p = new chartphp();

Step 3: Configure Data array using jQuery to fetch data from Database

$p->data_sql = "select strftime('%Y-%m',o.orderdate) as Year, sum(d.quantity) as Sales 
                    from `order details` d, orders o 
                    where o.orderid = d.orderid 
                    group by strftime('%Y-%m',o.orderdate) limit 50";

Step 4: Set Chart type

$p->chart_type = "line";
$p->xlabel = "Month";
$p->ylabel = "Sales";
$p->shape = "linear";

Step 5: Render Chart

$out = $p->render("c1");

For complete code, please visit live demo.