axislabelbkgex01.php
<?php

/**
 * JPGraph v4.0.3
 */

require_once __DIR__ . '/../../src/config.inc.php';

use Amenadiel\JpGraph\Graph;
use Amenadiel\JpGraph\Plot;

$ydata = [12, 19, 3, 9, 15, 10];

// The code to setup a very basic graph
$__width  = 200;
$__height = 150;
$graph    = new Graph\Graph($__width, $__height);
$graph->SetScale('intlin');
$graph->SetMargin(30, 15, 40, 30);
$graph->SetMarginColor('white');
$graph->SetFrame(true, 'blue', 3);

$graph->title->Set('Label background');
$graph->title->SetFont(FF_ARIAL, FS_BOLD, 12);

$graph->subtitle->SetFont(FF_ARIAL, FS_NORMAL, 10);
$graph->subtitle->SetColor('darkred');
$graph->subtitle->Set('"LABELBKG_NONE"');

$graph->SetAxisLabelBackground(LABELBKG_NONE, 'orange', 'red', 'lightblue', 'red');

// Use Ariel font
$graph->xaxis->SetFont(FF_ARIAL, FS_NORMAL, 9);
$graph->yaxis->SetFont(FF_ARIAL, FS_NORMAL, 9);
$graph->xgrid->Show();

// Create the plot line
$p1 = new Plot\LinePlot($ydata);
$graph->Add($p1);

// Output graph
$graph->Stroke();