本文主要介绍了PHP绘制股票趋势图和柱形图的实例。通过pchart类库实现绘制股票趋势图和柱形图，希望对有绘图需要的朋友有所帮助。
基于强大的pchart类库。
<?php
/*
* 股票趋势图和柱形图
* @author: Skiychan <developer@zzzzy.com>
* @created: 02/05/2015
*/
include "libs/pData.class.php";
include "libs/pDraw.class.php";
include "libs/pImage.class.php";
include "database.php";
include "libs/convert.php";
date_default_timezone_set('Asia/Shanghai');
/*
* @param type line/other 趋势图/柱形图 默认趋势图
* @param txt 1/other 显示/不显示 提示文字 默认不显示
* @param lang hk/cn 繁体中文/简体中文 默认繁体
* @param id int 股票编号 必填
* @param min int 最小时间 默认无
* @param max int 最大时间 默认无
*/
$type = isset($_GET['type']) ? $_GET['type'] : 'line';
$showtxt = (isset($_GET['txt']) && ($_GET['txt'] == 1)) ? true : false;
//设置语言
if (isset($_GET['lang'])) {
$lang = $_GET['lang'] == 'cn' ? 'cn' : 'hk';
} else {
$lang = 'hk';
}
$desc_tip = array(
'hk' => array(
'line' => array("昨日收盤價", "股價"),
'bar' => "總成交量："
),
'cn' => array(
'line' => array("昨日收盘价", "股价"),
'bar' => "总成交量："
)
);
$id = isset($_GET['id']) ? (int)$_GET['id'] : 1; //股票编码
//条件
$wheres = "where stock_no = ".$id;
//最小时间
if (isset($_GET['min'])) {
$wheres .= " and `created` >= ".(int)$_GET['min'];
}
//最大时间
if (isset($_GET['max'])) {
$wheres .= " and `created` <= ".(int)$_GET['max'];
}
$wheres .= " order by created";
$sth = $dbh->prepare("SELECT * FROM $tb_name " . $wheres);
$sth->execute();
$results = $sth->fetchAll(PDO::FETCH_ASSOC);
if ($lang == 'hk') {
$ttf_path = "fonts/zh_hk.ttc";
} else {
$ttf_path = "fonts/zh_cn.ttf";
}
//初始化
$line2 = array(); //股价
$bar = array(); //成交量
$times = array(); //时间
foreach ($results as $keys => $values) :
$line2[] = $values['current_price'];
$bar[] = $values['volume'];
//只显示整点的标签
if ($keys % 4 == 0) {
$times[] = $values['created'];
} else {
$times[] = VOID;
}
endforeach;
$l2counts = count($line2);
$myData = new pData();
//如果是线型图
if ($type == "line") {
//取股票名称
$stock_sth = $dbh->prepare("SELECT `name` FROM `tbl_stock` WHERE `code` = {$id}");
$stock_sth->execute();
$stock_info = $stock_sth->fetch(PDO::FETCH_ASSOC);
$func_name = "zhconversion_".$lang;
//$stock_name = $func_name($stock_info['name']);
$stock_name = "某某公司";
//取出最值
$sql = "SELECT MIN(`current_price`) xiao, MAX(`current_price`) da FROM $tb_name $wheres";
foreach ($dbh->query($sql, PDO::FETCH_ASSOC) as $row) {
$bottom = (int)$row['xiao'] - 2;
$top = (int)$row['da'] + 2;
}
//昨日收盘价
$l1s = array();
for ($i = 1; $i <= $l2counts; $i++) {
$l1s[] = 130;
}
$myData->addPoints($l1s, "Line1");
$myData->addPoints($line2, "Line2");
$myData->setPalette("Line1",array("R"=>51,"G"=>114,"B"=>178));
$myData->setPalette("Line2",array("R"=>0,"G"=>255,"B"=>0));
$myData->setAxisPosition(0, AXIS_POSITION_RIGHT);
$myData->addPoints($times, "Times");
$myData->setSerieDescription("Times","Time");
$myData->setAbscissa("Times");
$myData->setXAxisDisplay(AXIS_FORMAT_TIME,"H:i");
$myPicture = new pImage(480, 300, $myData);
//设置默认字体
$myPicture->setFontProperties(array("FontName" => "fonts/en_us.ttf", "FontSize" => 6));
//背景颜色
//$Settings = array("StartR"=>219, "StartG"=>231, "StartB"=>139, "EndR"=>1, "EndG"=>138, "EndB"=>68, "Alpha"=>50);
//$myPicture->drawGradientArea(0,0,480,300,DIRECTION_VERTICAL,$Settings);
//画格子和标签
$myPicture->setGraphArea(10, 40, 440, 260);
$AxisBoundaries = array(0 => array("Min" => $bottom, "Max" => $top));
$Settings = array(
"Mode" => SCALE_MODE_MANUAL,
"GridR" => 200,
"GridG" => 200,
"GridB" => 200,
"XMargin" => 0,
"YMargin" => 0,
//"DrawXLines" => false,
"GridTicks" => 3, //格子密度
"ManualScale" => $AxisBoundaries,
);
$myPicture->drawScale($Settings);
//画线
/*
$line_arr = array(
"ForceColor" => TRUE,
"ForceR" => 0,
"ForceG" => 0,
"ForceB" => 255);
$myPicture->drawLineChart($line_arr); */
$myPicture->drawLineChart();
//设置Line1为无效,再画底色
$myData->setSerieDrawable("Line1",FALSE);
//画区域底线
$area_arr = array(
"ForceTransparency"=>15, //透明度
);
$myPicture->drawAreaChart($area_arr);
//是否显示文字
if ($showtxt) {
//标题
$myPicture->drawText(200,30,$stock_name,array("FontName"=>$ttf_path, "FontSize"=>11,"Align"=>TEXT_ALIGN_BOTTOMMIDDLE));
//设置Line1为有效
$myData->setSerieDrawable("Line1",TRUE);
$myData->setSerieDescription("Line1",$desc_tip[$lang]['line'][0]);
$myData->setSerieDescription("Line2",$desc_tip[$lang]['line'][1]);
$myPicture->setFontProperties(array("FontName" => $ttf_path,"FontSize"=>8));
$tips = array(
"Style"=>LEGEND_NOBORDER,
"Mode"=>LEGEND_HORIZONTAL,
"FontR"=>0,"FontG"=>0,"FontB"=>0,
);
$myPicture->drawLegend(20,26,$tips);
}
//柱形图
} else {
$myData->addPoints($bar, "Bar");
$myData->setPalette("Bar",array("R"=>51,"G"=>114,"B"=>178)); //设置柱子的颜色
$myData->addPoints($times, "Times");
$myData->setSerieDescription("Times","Time");
$myData->setAbscissa("Times");
$myData->setXAxisDisplay(AXIS_FORMAT_TIME,"H:i");
$myPicture = new pImage(480, 200, $myData);
//设置默认字体
$myPicture->setFontProperties(array("FontName" => "fonts/en_us.ttf", "FontSize"=>6));
$myPicture->Antialias = FALSE;
$myPicture->setGraphArea(50,20,450,180);
//网格及坐标
$scaleSettings = array(
"Mode" => SCALE_MODE_START0,
"GridR"=>200,
"GridG"=>200,
"GridB"=>200);
$myPicture->drawScale($scaleSettings);
/*
$Palette = array();
for ($i = 0; $i <= $l2counts; $i++) {
$Palette[$i] = array("R"=>74,"G"=>114,"B"=>178,"Alpha"=>100);
}
//$Palette = array("0"=>array("R"=>74,"G"=>114,"B"=>178,"Alpha"=>100));
/* 覆盖画板色
$barSetting = array(
"OverrideColors"=>$Palette,
);
$myPicture->drawBarChart($barSetting);
*/
$myPicture->drawBarChart();
//是否显示文字
if ($showtxt) {
$tips = array(
"Style"=>LEGEND_NOBORDER,
"Mode"=>LEGEND_HORIZONTAL,
"FontR"=>0,"FontG"=>0,"FontB"=>0,
);
$myPicture->setFontProperties(array("FontName" => $ttf_path,"FontSize"=>9));
$alls = 0; //总成交量初始化
foreach ($bar as $value) {
$alls += $value;
}
$myData->setSerieDescription("Bar", $desc_tip[$lang]['bar'].$alls);
$myPicture->drawLegend(300,9,$tips);
}
}
$myPicture->stroke();
//$myPicture->autoOutput("image.png");
//保存日志
//file_put_contents("log.txt", json_encode($myData) . "\n");
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