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PHP Spline Area Charts & Graphs

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Spline Area Charts, also referred as Curved / Smoothed Area Chart, are similar to Area Charts except that the envelope of area is a smooth curve. Given example shows PHP Spline Area Chart along with source code that you can try running locally.

  • PHP Code
<?php

 $dataPoints = array(
	array("x" => 1483381800000 , "y" => 650),
	array("x" => 1483468200000 , "y" => 700),
	array("x" => 1483554600000 , "y" => 710),
	array("x" => 1483641000000 , "y" => 658),
	array("x" => 1483727400000 , "y" => 734),
	array("x" => 1483813800000 , "y" => 963),
	array("x" => 1483900200000 , "y" => 847),
	array("x" => 1483986600000 , "y" => 853),
	array("x" => 1484073000000 , "y" => 869),
	array("x" => 1484159400000 , "y" => 943),
	array("x" => 1484245800000 , "y" => 970),
	array("x" => 1484332200000 , "y" => 869),
	array("x" => 1484418600000 , "y" => 890),
	array("x" => 1484505000000 , "y" => 930)
 );

?>
<!DOCTYPE HTML>
<html>
<head>
<script>
window.onload = function () {

var chart = new CanvasJS.Chart("chartContainer", {
	animationEnabled: true,
	theme: "light2",
	title:{
		text: "Site Traffic"
	},
	axisX: {
		valueFormatString: "DD MMM"
	},
	axisY: {
		title: "Total Number of Visits",
		includeZero: true,
		maximum: 1200
	},
	data: [{
		type: "splineArea",
		color: "#6599FF",
		xValueType: "dateTime",
		xValueFormatString: "DD MMM",
		yValueFormatString: "#,##0 Visits",
		dataPoints: <?php echo json_encode($dataPoints); ?>
	}]
});

chart.render();

}
</script>
</head>
<body>
<div id="chartContainer" style="height: 370px; width: 100%;"></div>
<script src="https://canvasjs.com/assets/script/canvasjs.min.js"></script>
</body>
</html>                              

Chart Customizations

You can change the look and feel of the chart using the color and fillOpacity properties. Some of the other commonly used customization options include markerColor, markerBorderColor, etc.

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