ChartDirector for PHP is a fast and powerful PHP charting library for creating zoomable and scrollable charts, graphs and meters. It's unique layering architecture enables you to synthesize the charts you want using standard chart layers. ChartDirector's comprehensive chart styles include pie, donut, bar, line, spline, step line, trend line, curve-fitting, inter-line filling, area, band, scatter, bubble, floating box, box-whisker, waterfall, contour, heat map, surface, vector, finance, gantt, radar, polar, rose, pyramid, cone, funnel, angular and linear meters and guages. ChartDirector charts supports mouse and touch events, with tool tips, clickable chart objects, and "drag to zoom" and "drag to scroll" features. It can output charts as PNG, JPG, GIF, BMP, SVG as well as PDF. Easy to use and with comprehensive documentation. Come with numerous examples. Free trial available.