PDFGraphs

<?php
require('pdf_graphs.php');

$pdf = new PDFGraphs('P', 'mm', 'A4');
$pdf->SetAutoPageBreak(false);

// ---- Page 1: gradient bars, rotated labels, grouped & stacked -----
$pdf->AddPage();
$pdf->SetFont('Helvetica', 'B', 16);
$pdf->SetTextColor(17, 24, 39);
$pdf->Text(10, 15, 'PDFGraphs - Community-script showcase');

$pdf->BarChart(
    array(23, 45, 56, 78, 32, 41, 67),
    array('Monday', 'Tuesday', 'Wednesday', 'Thursday',
          'Friday', 'Saturday', 'Sunday'),
    10, 22, 95, 80,
    array('title' => 'Daily Users (rotated labels)',
          'gradient' => true, 'rotateLabels' => 30)
);

$pdf->SetPalette('ocean');
$pdf->HorizontalBarChart(
    array(120, 95, 78, 64, 50, 38),
    array('Search', 'Direct', 'Social', 'Email', 'Referral', 'Other'),
    110, 22, 90, 80,
    array('title' => 'Traffic Sources (gradient)', 'gradient' => true)
);

$pdf->SetPalette('modern');
$pdf->GroupedBarChart(
    array(
        array(30, 50, 45, 60),
        array(25, 40, 55, 48),
        array(15, 30, 35, 42),
    ),
    array('Q1', 'Q2', 'Q3'),
    array('2023', '2024', '2025', '2026'),
    10, 115, 95, 80,
    array('title' => 'Quarterly Revenue', 'gradient' => true)
);

$pdf->StackedBarChart(
    array(
        array(20, 30, 25, 35),
        array(15, 25, 30, 20),
        array(10, 15, 20, 25),
    ),
    array('Product A', 'Product B', 'Product C'),
    array('Q1', 'Q2', 'Q3', 'Q4'),
    110, 115, 90, 80,
    array('title' => 'Revenue Mix', 'gradient' => true)
);

$pdf->LineChart(
    array(
        array(12, 19, 15, 25, 22, 30, 28, 35, 32, 40),
        array( 8, 15, 18, 20, 25, 22, 28, 30, 35, 38),
    ),
    array('Revenue', 'Costs'),
    array('Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct'),
    10, 205, 190, 80,
    array('title' => 'Revenue vs Costs', 'smoothFill' => true,
          'fillAlpha' => 0.25)
);

// ---- Page 2: gradient pie/donut, area, scatter w/ alpha ----------
$pdf->AddPage();
$pdf->SetFont('Helvetica', 'B', 16);
$pdf->SetTextColor(17, 24, 39);
$pdf->Text(10, 15, 'Gradients, alpha & rounded shapes');

$pdf->PieChart(
    array(35, 25, 20, 12, 8),
    array('Mobile', 'Desktop', 'Tablet', 'TV', 'Other'),
    10, 22, 95, 90,
    array('title' => 'Device Share (radial gradient)',
          'gradient' => true)
);

$pdf->SetPalette('sunset');
$pdf->DonutChart(
    array(40, 30, 20, 10),
    array('Free', 'Pro', 'Team', 'Enterprise'),
    110, 22, 90, 90,
    array('title' => 'Subscription Tiers', 'gradient' => true)
);

$pdf->SetPalette('forest');
$pdf->AreaChart(
    array(
        array(10, 18, 14, 22, 28, 35, 32, 40, 45, 50, 48, 55),
        array( 5, 12, 10, 18, 22, 25, 30, 28, 33, 38, 36, 42),
    ),
    array('Active', 'New'),
    array('J','F','M','A','M','J','J','A','S','O','N','D'),
    10, 122, 95, 80,
    array('title' => 'User Growth (overlapping)', 'fillAlpha' => 0.35)
);

$pdf->SetPalette('modern');
$pdf->ScatterPlot(
    array(
        array(array(1,2), array(2,4), array(3,3), array(4,6),
              array(5,8), array(6,7), array(7,10), array(3.5,5),
              array(4.5,6.5), array(5.5,7.5)),
        array(array(1.5,1), array(2.5,3), array(3.5,5), array(4.5,4),
              array(5.5,6), array(6.5,9), array(2,2), array(3,4)),
    ),
    array('Group A', 'Group B'),
    110, 122, 90, 80,
    array('title' => 'Correlation (alpha 0.75)', 'xLabel' => 'Input',
          'alpha' => 0.75)
);

// Showcase rotated text and shape primitives
$pdf->SetFont('Helvetica', 'B', 9);
$pdf->SetTextColor(75, 85, 99);
$pdf->RotatedText(8, 165, 'Vertical axis label via Rotate()', 90);

// RoundedRect demo
$pdf->SetFillColor(59, 130, 246);
$pdf->RoundedRect(20, 215, 40, 25, 4, 'F');
$pdf->SetFillColor(239, 68, 68);
$pdf->RoundedRect(70, 215, 40, 25, 4, 'F', '13'); // diagonal corners
$pdf->SetDrawColor(34, 197, 94);
$pdf->SetLineWidth(0.8);
$pdf->RoundedRect(120, 215, 40, 25, 4, 'D', '24'); // other diagonal

$pdf->SetFont('Helvetica', '', 8);
$pdf->SetTextColor(255, 255, 255);
$pdf->Text(28, 230, 'All 4 corners');
$pdf->Text(78, 230, 'TL + BR only');
$pdf->SetTextColor(34, 197, 94);
$pdf->Text(128, 230, 'TR + BL only');

$pdf->Output();
?>