pChart是一个开源的图表生成库,主要涉及3个Class:pChart.class, pData.class, pCache.class,可生成20多种简单或复杂的图表,支持PNG,JPG,GIF通用图片格式。数据源可以来自于Database,CSV,当然也可以手写。使用该程序PHP需要开启GD服务,先来看看pChar
pChart是一个开源的图表生成库,主要涉及3个Class:pChart.class, pData.class, pCache.class,可生成20多种简单或复杂的图表,支持PNG,JPG,GIF通用图片格式。数据源可以来自于Database,CSV,当然也可以手写。使用该程序PHP需要开启GD服务,先来看看pChart的工作流程:
主要分为三步:
- * 读取用于生成图表数据(数据库、文件)
- * 设计图表样式(圆角、底色等)
下面看一个简单的柱状图表:
代码如下:
<span><?php </span><span>// Standard inclusions </span><span>include</span><span>(</span><span>"pChart/pData.class"</span><span>)</span>; <span>include</span><span>(</span><span>"pChart/pChart.class"</span><span>)</span>; <span>// Dataset definition </span><span>$DataSet </span><span>= </span><span>new </span>pData; <span>//图表数据 </span><span>$DataSet</span><span>-></span>AddPoint<span>(</span><span>array</span><span>(</span><span>1</span><span>,</span><span>4</span><span>,-</span><span>3</span><span>,</span><span>2</span><span>,-</span><span>3</span><span>,</span><span>3</span><span>,</span><span>2</span><span>,</span><span>1</span><span>,</span><span>0</span><span>,</span><span>7</span><span>,</span><span>4</span><span>),</span><span>"Serie1"</span><span>)</span>; <span>$DataSet</span><span>-></span>AddPoint<span>(</span><span>array</span><span>(</span><span>3</span><span>,</span><span>3</span><span>,-</span><span>4</span><span>,</span><span>1</span><span>,-</span><span>2</span><span>,</span><span>2</span><span>,</span><span>1</span><span>,</span><span>0</span><span>,-</span><span>1</span><span>,</span><span>6</span><span>,</span><span>3</span><span>),</span><span>"Serie2"</span><span>)</span>; <span>$DataSet</span><span>-></span>AddPoint<span>(</span><span>array</span><span>(</span><span>4</span><span>,</span><span>1</span><span>,</span><span>2</span><span>,-</span><span>1</span><span>,-</span><span>4</span><span>,-</span><span>2</span><span>,</span><span>3</span><span>,</span><span>2</span><span>,</span><span>1</span><span>,</span><span>2</span><span>,</span><span>2</span><span>),</span><span>"Serie3"</span><span>)</span>; <span>$DataSet</span><span>-></span>AddAllSeries<span>()</span>; <span>$DataSet</span><span>-></span>SetAbsciseLabelSerie<span>()</span>; <span>//数据图例 </span><span>$DataSet</span><span>-></span>SetSerieName<span>(</span><span>"Microsoft"</span><span>,</span><span>"Serie1"</span><span>)</span>; <span>$DataSet</span><span>-></span>SetSerieName<span>(</span><span>"IBM"</span><span>,</span><span>"Serie2"</span><span>)</span>; <span>$DataSet</span><span>-></span>SetSerieName<span>(</span><span>"Google"</span><span>,</span><span>"Serie3"</span><span>)</span>; <span>// Initialise the graph </span><span>$Test </span><span>= </span><span>new </span>pChart<span>(</span><span>700</span><span>,</span><span>230</span><span>)</span>; <span>//设置图表尺寸、样式 </span><span>$Test</span><span>-></span>setFontProperties<span>(</span><span>"Fonts/tahoma.ttf"</span><span>,</span><span>8</span><span>)</span>; <span>$Test</span><span>-></span>setGraphArea<span>(</span><span>50</span><span>,</span><span>30</span><span>,</span><span>680</span><span>,</span><span>200</span><span>)</span>; <span>$Test</span><span>-></span>drawFilledRoundedRectangle<span>(</span><span>7</span><span>,</span><span>7</span><span>,</span><span>693</span><span>,</span><span>223</span><span>,</span><span>5</span><span>,</span><span>240</span><span>,</span><span>240</span><span>,</span><span>240</span><span>)</span>; <span>$Test</span><span>-></span>drawRoundedRectangle<span>(</span><span>5</span><span>,</span><span>5</span><span>,</span><span>695</span><span>,</span><span>225</span><span>,</span><span>5</span><span>,</span><span>230</span><span>,</span><span>230</span><span>,</span><span>230</span><span>)</span>; <span>$Test</span><span>-></span>drawGraphArea<span>(</span><span>255</span><span>,</span><span>255</span><span>,</span><span>255</span><span>,</span><span>TRUE</span><span>)</span>; <span>$Test</span><span>-></span>drawScale<span>(</span><span>$DataSet</span><span>-></span>GetData<span>(),</span><span>$DataSet</span><span>-></span>GetDataDescription<span>(),</span>SCALE_NORMAL<span>,</span><span>150</span><span>,</span><span>150</span><span>,</span><span>150</span><span>,</span><span>TRUE</span><span>,</span><span>0</span><span>,</span><span>2</span><span>,</span><span>TRUE</span><span>)</span>; <span>$Test</span><span>-></span>drawGrid<span>(</span><span>4</span><span>,</span><span>TRUE</span><span>,</span><span>230</span><span>,</span><span>230</span><span>,</span><span>230</span><span>,</span><span>50</span><span>)</span>; <span>// Draw the 0 line </span><span>$Test</span><span>-></span>setFontProperties<span>(</span><span>"Fonts/MankSans.ttf"</span><span>,</span><span>6</span><span>)</span>; <span>$Test</span><span>-></span>drawTreshold<span>(</span><span>0</span><span>,</span><span>143</span><span>,</span><span>55</span><span>,</span><span>72</span><span>,</span><span>TRUE</span><span>,</span><span>TRUE</span><span>)</span>; <span>// Draw the bar graph //柱状图要使用drawBarGraph() </span><span>$Test</span><span>-></span>drawBarGraph<span>(</span><span>$DataSet</span><span>-></span>GetData<span>(),</span><span>$DataSet</span><span>-></span>GetDataDescription<span>(),</span><span>TRUE</span><span>,</span><span>80</span><span>)</span>; <span>// Finish the graph //制作图例、标题、字体等属性 </span><span>$Test</span><span>-></span>setFontProperties<span>(</span><span>"Fonts/MankSans.ttf"</span><span>,</span><span>10</span><span>)</span>; <span>$Test</span><span>-></span>drawLegend<span>(</span><span>596</span><span>,</span><span>150</span><span>,</span><span>$DataSet</span><span>-></span>GetDataDescription<span>(),</span><span>255</span><span>,</span><span>255</span><span>,</span><span>255</span><span>)</span>; <span>$Test</span><span>-></span>setFontProperties<span>(</span><span>"Fonts/MankSans.ttf"</span><span>,</span><span>10</span><span>)</span>; <span>$Test</span><span>-></span>drawTitle<span>(</span><span>50</span><span>,</span><span>22</span><span>,</span><span>"Example"</span><span>,</span><span>50</span><span>,</span><span>50</span><span>,</span><span>50</span><span>,</span><span>585</span><span>)</span>; <span>//生成图表 </span><span>$imageFile </span><span>= </span><span>"example12.png"</span>; <span>$Test</span><span>-></span>Render<span>(</span><span>$imageFile</span><span>)</span>; <span>echo </span><span>'<img src="/static/imghwm/default1.png" data-src="'</span><span>.</span><span>$imageFile</span><span>.</span><span>'" class="lazy" alt="PHP生成图表pChart" ><span>.</span><span>$imageFile</span><span>.</span><span>'">'</span>; <span>?></span></span></span>
这个是雷达效果的:
代码:
<span><?php </span><span>// Standard inclusions </span><span>include</span><span>(</span><span>"pChart/pData.class"</span><span>)</span>; <span>include</span><span>(</span><span>"pChart/pChart.class"</span><span>)</span>; <span>// Dataset definition </span><span>$DataSet </span><span>= </span><span>new </span>pData; <span>$DataSet</span><span>-></span>AddPoint<span>(</span><span>array</span><span>(</span><span>"Memory"</span><span>,</span><span>"Disk"</span><span>,</span><span>"Network"</span><span>,</span><span>"Slots"</span><span>,</span><span>"CPU"</span><span>),</span><span>"Label"</span><span>)</span>; <span>$DataSet</span><span>-></span>AddPoint<span>(</span><span>array</span><span>(</span><span>6</span><span>,</span><span>4</span><span>,</span><span>7</span><span>,</span><span>4</span><span>,</span><span>5</span><span>),</span><span>"Serie1"</span><span>)</span>; <span>$DataSet</span><span>-></span>AddPoint<span>(</span><span>array</span><span>(</span><span>2</span><span>,</span><span>3</span><span>,</span><span>5</span><span>,</span><span>2</span><span>,</span><span>4</span><span>),</span><span>"Serie2"</span><span>)</span>; <span>$DataSet</span><span>-></span>AddSerie<span>(</span><span>"Serie1"</span><span>)</span>; <span>$DataSet</span><span>-></span>AddSerie<span>(</span><span>"Serie2"</span><span>)</span>; <span>$DataSet</span><span>-></span>SetAbsciseLabelSerie<span>(</span><span>"Label"</span><span>)</span>; <span>$DataSet</span><span>-></span>SetSerieName<span>(</span><span>"Reference"</span><span>,</span><span>"Serie1"</span><span>)</span>; <span>$DataSet</span><span>-></span>SetSerieName<span>(</span><span>"Tested computer"</span><span>,</span><span>"Serie2"</span><span>)</span>; <span>// Initialise the graph </span><span>$Test </span><span>= </span><span>new </span>pChart<span>(</span><span>400</span><span>,</span><span>400</span><span>)</span>; <span>$Test</span><span>-></span>setFontProperties<span>(</span><span>"Fonts/tahoma.ttf"</span><span>,</span><span>8</span><span>)</span>; <span>$Test</span><span>-></span>drawFilledRoundedRectangle<span>(</span><span>7</span><span>,</span><span>7</span><span>,</span><span>393</span><span>,</span><span>393</span><span>,</span><span>5</span><span>,</span><span>240</span><span>,</span><span>240</span><span>,</span><span>240</span><span>)</span>; <span>$Test</span><span>-></span>drawRoundedRectangle<span>(</span><span>5</span><span>,</span><span>5</span><span>,</span><span>395</span><span>,</span><span>395</span><span>,</span><span>5</span><span>,</span><span>230</span><span>,</span><span>230</span><span>,</span><span>230</span><span>)</span>; <span>$Test</span><span>-></span>setGraphArea<span>(</span><span>30</span><span>,</span><span>30</span><span>,</span><span>370</span><span>,</span><span>370</span><span>)</span>; <span>$Test</span><span>-></span>drawFilledRoundedRectangle<span>(</span><span>30</span><span>,</span><span>30</span><span>,</span><span>370</span><span>,</span><span>370</span><span>,</span><span>5</span><span>,</span><span>255</span><span>,</span><span>255</span><span>,</span><span>255</span><span>)</span>; <span>$Test</span><span>-></span>drawRoundedRectangle<span>(</span><span>30</span><span>,</span><span>30</span><span>,</span><span>370</span><span>,</span><span>370</span><span>,</span><span>5</span><span>,</span><span>220</span><span>,</span><span>220</span><span>,</span><span>220</span><span>)</span>; <span>// Draw the radar graph //要使用drawRadarAxis()生成雷达效果 </span><span>$Test</span><span>-></span>drawRadarAxis<span>(</span><span>$DataSet</span><span>-></span>GetData<span>(),</span><span>$DataSet</span><span>-></span>GetDataDescription<span>(),</span><span>TRUE</span><span>,</span><span>20</span><span>,</span><span>120</span><span>,</span><span>120</span><span>,</span><span>120</span><span>,</span><span>230</span><span>,</span><span>230</span><span>,</span><span>230</span><span>)</span>; <span>$Test</span><span>-></span>drawFilledRadar<span>(</span><span>$DataSet</span><span>-></span>GetData<span>(),</span><span>$DataSet</span><span>-></span>GetDataDescription<span>(),</span><span>50</span><span>,</span><span>20</span><span>)</span>; <span>// Finish the graph </span><span>$Test</span><span>-></span>drawLegend<span>(</span><span>15</span><span>,</span><span>15</span><span>,</span><span>$DataSet</span><span>-></span>GetDataDescription<span>(),</span><span>255</span><span>,</span><span>255</span><span>,</span><span>255</span><span>)</span>; <span>$Test</span><span>-></span>setFontProperties<span>(</span><span>"Fonts/tahoma.ttf"</span><span>,</span><span>10</span><span>)</span>; <span>$Test</span><span>-></span>drawTitle<span>(</span><span>0</span><span>,</span><span>22</span><span>,</span><span>"Example"</span><span>,</span><span>50</span><span>,</span><span>50</span><span>,</span><span>50</span><span>,</span><span>400</span><span>)</span>; <span>$imageFile </span><span>= </span><span>"example8.png"</span>; <span>$Test</span><span>-></span>Render<span>(</span><span>$imageFile</span><span>)</span>; <span>echo </span><span>'<img src="/static/imghwm/default1.png" data-src="'</span><span>.</span><span>$imageFile</span><span>.</span><span>'" class="lazy" alt="PHP生成图表pChart" ><span>.</span><span>$imageFile</span><span>.</span><span>'">'</span>; <span>?></span></span></span>
再看几个其他的效果
1,饼图:
2, 双座标曲线图:
3, 层叠柱状图:
4, 多图表:
图表的种类已经相当丰富了,具体图表设置请参考
http://pchart.sourceforge.net/documentation.php?topic=pChart
::源代码下载::

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Dreamweaver CS6
Visual web development tools

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

Atom editor mac version download
The most popular open source editor

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
