PHP可以使用多种方式进行多源数据集成,其中包括:
PHP可以使用多种方式进行可视化分析,其中包括:
示例代码:
// 使用PDO扩展连接MySQL和SQLite数据库
$dsn1 = 'mysql:host=localhost;dbname=test';
$username1 = 'root';
$password1 = '';
$pdo1 = new PDO($dsn1, $username1, $password1);
$dsn2 = 'sqlite:/path/to/database.db';
$username2 = '';
$password2 = '';
$pdo2 = new PDO($dsn2, $username2, $password2);
// 使用pChart生成柱状图
require_once 'pChart2.1.4/class/pData.class.php';
require_once 'pChart2.1.4/class/pDraw.class.php';
require_once 'pChart2.1.4/class/pImage.class.php';
$data = new pData();
$data->addPoints(array(1, 2, 3, 4, 5), 'Score');
$data->addPoints(array('A', 'B', 'C', 'D', 'E'), 'Labels');
$data->setSerieDescription('Labels', 'Grade');
$data->setAbscissa('Labels');
$imageWidth = 500;
$imageHeight = 250;
$image = new pImage($imageWidth, $imageHeight, $data);
$draw = new pDraw();
$draw->setFillColor(array(255, 255, 255));
$draw->setLineWidth(0);
$draw->setFontProperties(array('FontName' => 'pChart2.1.4/fonts/verdana.ttf', 'FontSize' => 8));
$draw->setGraphArea(50, 30, $imageWidth - 30, $imageHeight - 50);
$draw->drawRectangle(0, 0, $imageWidth, $imageHeight, array('R' => 255, 'G' => 255, 'B' => 255));
$draw->drawText(250, 20, 'Test Scores', array('FontSize' => 15, 'Align' => TEXT_ALIGN_BOTTOMMIDDLE));
$draw->setFontProperties(array('FontName' => 'pChart2.1.4/fonts/verdana.ttf', 'FontSize' => 10));
$image->setFontProperties(array('FontName' => 'pChart2.1.4/fonts/verdana.ttf', 'FontSize' => 10));
$draw->drawFromPNG('pChart2.1.4/masks/gradient.png', array('Alpha' => 100));
$image->drawFilledRectangle(0, 0, $imageWidth, $imageHeight, array('R' => 255, 'G' => 255, 'B' => 255, 'Alpha' => 30));
$draw->drawLineChart(array('DisplayValues' => true, 'DisplayColor' => array(255, 255, 255)));
$image->drawText(250, 230, 'Grade', array('FontSize' => 12, 'Align' => TEXT_ALIGN_BOTTOMMIDDLE));
$image->drawFromPNG('pChart2.1.4/masks/logo.png', array('X' => $imageWidth - 110, 'Y' => $imageHeight - 25, 'Alpha' => 100));
$image->autoOutput('png');