php中用GD绘制折线图，gd绘制折线_PHP教程

php中用GD绘制折线图，gd绘制折线

php中用GD绘制折线图，代码如下：

<span>  1</span> <span>Class</span><span> Chart{
</span><span>  2</span>     <span>private</span> <span>$image</span>; <span>//</span><span> 定义图像</span>
<span>  3</span>     <span>private</span> <span>$title</span>; <span>//</span><span> 定义标题</span>
<span>  4</span>     <span>private</span> <span>$ydata</span>; <span>//</span><span> 定义Y轴数据</span>
<span>  5</span>     <span>private</span> <span>$xdata</span>; <span>//</span><span> 定义X轴数据</span>
<span>  6</span>     <span>private</span> <span>$seriesName</span>; <span>//</span><span> 定义每个系列数据的名称</span>
<span>  7</span>     <span>private</span> <span>$color</span>; <span>//</span><span> 定义条形图颜色</span>
<span>  8</span>     <span>private</span> <span>$bgcolor</span>; <span>//</span><span> 定义图片背景颜色</span>
<span>  9</span>     <span>private</span> <span>$width</span>; <span>//</span><span> 定义图片的宽</span>
<span> 10</span>     <span>private</span> <span>$height</span>; <span>//</span><span> 定义图片的长</span>
<span> 11</span>     
<span> 12</span>     <span>/*</span>
<span> 13</span> <span>     * 构造函数 
</span><span> 14</span> <span>     * String title 图片标题
</span><span> 15</span> <span>     * Array xdata 索引数组，X轴数据
</span><span> 16</span> <span>     * Array ydata 索引数组，数字数组,Y轴数据
</span><span> 17</span> <span>     * Array series_name 索引数组，数据系列名称
</span><span> 18</span>      <span>*/</span>
<span> 19</span>     <span>function</span> __construct(<span>$title</span>,<span>$xdata</span>,<span>$ydata</span>,<span>$seriesName</span><span>) {        
</span><span> 20</span>         <span>$this</span>->title = <span>$title</span><span>;
</span><span> 21</span>         <span>$this</span>->xdata = <span>$xdata</span><span>;
</span><span> 22</span>         <span>$this</span>->ydata = <span>$ydata</span><span>;
</span><span> 23</span>         <span>$this</span>->seriesName = <span>$seriesName</span><span>;
</span><span> 24</span>         <span>$this</span>->color = <span>array</span>('#058DC7', '#50B432', '#ED561B', '#DDDF00', '#24CBE5', '#64E572', '#FF9655', '#FFF263', '#6AF9C4'<span>);
</span><span> 25</span> <span>    }
</span><span> 26</span>     
<span> 27</span>     <span>/*</span>
<span> 28</span> <span>     * 公有方法，设置条形图的颜色 
</span><span> 29</span> <span>     * Array color 颜色数组,元素取值为'#058DC7'这种形式
</span><span> 30</span>      <span>*/</span>
<span> 31</span>     <span>function</span> setBarColor(<span>$color</span><span>){
</span><span> 32</span>         <span>$this</span>->color = <span>$color</span><span>;
</span><span> 33</span> <span>    }
</span><span> 34</span> <span>/*</span>
<span> 35</span> <span>     * 绘制折线图
</span><span> 36</span>      <span>*/</span>
<span> 37</span>     <span>public</span> <span>function</span><span> paintLineChart() {
</span><span> 38</span>         <span>$ydataNum</span> = <span>$this</span>->arrayNum(<span>$this</span>->ydata); <span>//</span><span> 取得数据分组的个数</span>
<span> 39</span>         <span>$max</span> = <span>$this</span>->arrayMax(<span>$this</span>->ydata); <span>//</span><span> 取得所有呈现数据的最大值</span>
<span> 40</span>         <span>$max</span> = (<span>$max</span> > 100)? <span>$max</span> : 100<span>;
</span><span> 41</span>         <span>$multi</span> = <span>$max</span>/100; <span>//</span><span> 如果最大数据是大于100的则进行缩小处理        </span>
<span> 42</span>         <span>$barHeightMulti</span> = 2.2; <span>//</span><span> 条形高缩放的比例</span>
<span> 43</span>         <span>$lineWidth</span> = 50<span>;
</span><span> 44</span>         <span>$chartLeft</span> = (1+<span>strlen</span>(<span>$max</span>))*12; <span>//</span><span> 设置图片左边的margin</span>
<span> 45</span>         
<span> 46</span>         <span>$lineY</span> = 250; <span>//</span><span> 初始化条形图的Y的坐标
</span><span> 47</span> <span>        // 设置图片的宽、高
</span><span> 48</span> <span>        //$this->width = $lineWidth*count($this->xdata) + $chartLeft - $lineWidth/1.6; </span>
<span> 49</span>         
<span> 50</span>         <span>$margin</span> = 10; <span>//</span><span> 小矩形描述右边margin</span>
<span> 51</span>         <span>$recWidth</span> = 20; <span>//</span><span> 小矩形的宽</span>
<span> 52</span>         <span>$recHeight</span> = 15; <span>//</span><span> 小矩形的高</span>
<span> 53</span>         <span>$space</span> = 20; <span>//</span><span> 小矩形与条形图的间距</span>
<span> 54</span>         <span>$tmpWidth</span> = 0<span>;
</span><span> 55</span>         <span>//</span><span> 设置图片的宽、高</span>
<span> 56</span>         <span>$lineChartWidth</span> =  <span>$lineWidth</span>*<span>count</span>(<span>$this</span>->xdata) + <span>$chartLeft</span> - <span>$lineWidth</span>/1.6<span> ;
</span><span> 57</span>         <span>//</span><span> 两个系列数据以上的加上小矩形的宽</span>
<span> 58</span>         <span>if</span>(<span>$ydataNum</span> > 1<span>) {
</span><span> 59</span>             <span>$tmpWidth</span> = <span>$this</span>->arrayLengthMax(<span>$this</span>->seriesName)*10*4/3 + <span>$space</span> + <span>$recWidth</span> + + <span>$margin</span><span>;
</span><span> 60</span> <span>        } 
</span><span> 61</span>         <span>$this</span>->width = <span>$lineChartWidth</span> + <span>$tmpWidth</span><span>; 
</span><span> 62</span>         
<span> 63</span>         <span>$this</span>->height = 300<span>; 
</span><span> 64</span>         <span>$this</span>->image = imagecreatetruecolor(<span>$this</span>->width ,<span>$this</span>->height); <span>//</span><span> 准备画布</span>
<span> 65</span>         <span>$this</span>->bgcolor = imagecolorallocate(<span>$this</span>->image,255,255,255); <span>//</span><span> 图片的背景颜色
</span><span> 66</span>         
<span> 67</span> <span>        // 设置条形图的颜色</span>
<span> 68</span>         <span>$color</span> = <span>array</span><span>();
</span><span> 69</span>         <span>foreach</span>(<span>$this</span>->color <span>as</span> <span>$col</span><span>) {
</span><span> 70</span>             <span>$col</span> = <span>substr</span>(<span>$col</span>,1,<span>strlen</span>(<span>$col</span>)-1<span>);
</span><span> 71</span>             <span>$red</span> = <span>hexdec</span>(<span>substr</span>(<span>$col</span>,0,2<span>));
</span><span> 72</span>             <span>$green</span> = <span>hexdec</span>(<span>substr</span>(<span>$col</span>,2,2<span>));
</span><span> 73</span>             <span>$blue</span> = <span>hexdec</span>(<span>substr</span>(<span>$col</span>,4,2<span>));
</span><span> 74</span>             <span>$color</span>[] = imagecolorallocate(<span>$this</span>->image ,<span>$red</span>, <span>$green</span>, <span>$blue</span><span>);
</span><span> 75</span> <span>        }
</span><span> 76</span>         
<span> 77</span>         <span>//</span><span> 设置线段的颜色、字体的颜色、字体的路径</span>
<span> 78</span>         <span>$lineColor</span> = imagecolorallocate(<span>$this</span>->image ,0xcc,0xcc,0xcc<span>);
</span><span> 79</span>         <span>$fontColor</span> = imagecolorallocate(<span>$this</span>->image, 0x95,0x8f,0x8f<span>);
</span><span> 80</span>         <span>$fontPath</span> = 'font/simsun.ttc'<span>;
</span><span> 81</span>         
<span> 82</span>         imagefill(<span>$this</span>->image,0,0,<span>$this</span>->bgcolor); <span>//</span><span> 绘画背景
</span><span> 83</span>         
<span> 84</span> <span>        // 绘画图的分短线与左右边线</span>
<span> 85</span>         <span>for</span>(<span>$i</span> = 0; <span>$i</span> < 6; <span>$i</span>++<span> ) {
</span><span> 86</span>             imageline(<span>$this</span>->image,<span>$chartLeft</span>-10,<span>$lineY</span>-<span>$barHeightMulti</span>*<span>$max</span>/5/<span>$multi</span>*<span>$i</span>,<span>$lineChartWidth</span>,<span>$lineY</span>-<span>$barHeightMulti</span>*<span>$max</span>/5/<span>$multi</span>*<span>$i</span>,<span>$lineColor</span><span>);
</span><span> 87</span>             imagestring(<span>$this</span>->image,4,5,<span>$lineY</span>-<span>$barHeightMulti</span>*<span>$max</span>/5/<span>$multi</span>*<span>$i</span>-8,<span>floor</span>(<span>$max</span>/5*<span>$i</span>),<span>$fontColor</span><span>);
</span><span> 88</span> <span>        }        
</span><span> 89</span>         imageline(<span>$this</span>->image,<span>$chartLeft</span>-10,30,<span>$chartLeft</span>-10,<span>$lineY</span>,<span>$lineColor</span><span>);
</span><span> 90</span>         imageline(<span>$this</span>->image,<span>$lineChartWidth</span>-1,30,<span>$lineChartWidth</span>-1,<span>$lineY</span>,<span>$lineColor</span><span>);
</span><span> 91</span>         <span>$style</span> = <span>array</span>(<span>$lineColor</span>,<span>$lineColor</span>,<span>$lineColor</span>,<span>$lineColor</span>,<span>$lineColor</span>,<span>$this</span>->bgcolor,<span>$this</span>->bgcolor,<span>$this</span>->bgcolor,<span>$this</span>->bgcolor,<span>$this</span>-><span>bgcolor);
</span><span> 92</span>         imagesetstyle(<span>$this</span>->image,<span>$style</span><span>);
</span><span> 93</span>         
<span> 94</span>         <span>//</span><span> 绘制折线图的分隔线（虚线）</span>
<span> 95</span>         <span>foreach</span>(<span>$this</span>->xdata <span>as</span> <span>$key</span> => <span>$val</span><span>) {
</span><span> 96</span>                 <span>$lineX</span> = <span>$chartLeft</span> + 3 + <span>$lineWidth</span>*<span>$key</span><span>;
</span><span> 97</span>                 imageline(<span>$this</span>->image,<span>$lineX</span>,30,<span>$lineX</span>,<span>$lineY</span>,<span>IMG_COLOR_STYLED);
</span><span> 98</span> <span>        }
</span><span> 99</span>         
<span>100</span>         <span>//</span><span> 绘画图的折线</span>
<span>101</span>         <span>foreach</span>(<span>$this</span>->ydata <span>as</span> <span>$key</span> => <span>$val</span><span>) {
</span><span>102</span>             <span>if</span>(<span>$ydataNum</span> == 1<span>) {
</span><span>103</span>                 <span>//</span><span> 一个系列数据时</span>
<span>104</span>                 <span>if</span>(<span>$key</span> == <span>count</span>(<span>$this</span>->ydata) - 1 ) <span>break</span><span>;
</span><span>105</span>                 <span>$lineX</span> = <span>$chartLeft</span> + 3 + <span>$lineWidth</span>*<span>$key</span><span>;
</span><span>106</span>                 <span>$lineY2</span> = <span>$lineY</span>-<span>$barHeightMulti</span>*(<span>$this</span>->ydata[<span>$key</span>+1])/<span>$multi</span><span>;
</span><span>107</span>                 
<span>108</span>                 <span>//</span><span> 画折线</span>
<span>109</span>                 <span>if</span>(<span>$key</span> == <span>count</span>(<span>$this</span>->ydata) - 2<span> ) {
</span><span>110</span>                     imagefilledellipse(<span>$this</span>->image,<span>$lineX</span>+<span>$lineWidth</span>,<span>$lineY2</span>,10,10,<span>$color</span>[0<span>]);
</span><span>111</span> <span>                }
</span><span>112</span>                 imageline(<span>$this</span>->image,<span>$lineX</span>,<span>$lineY</span>-<span>$barHeightMulti</span>*<span>$val</span>/<span>$multi</span>,<span>$lineX</span>+<span>$lineWidth</span>,<span>$lineY2</span>,<span>$color</span>[0<span>]);
</span><span>113</span>                 imagefilledellipse(<span>$this</span>->image,<span>$lineX</span>,<span>$lineY</span>-<span>$barHeightMulti</span>*<span>$val</span>/<span>$multi</span>,10,10,<span>$color</span>[0<span>]);
</span><span>114</span>             }<span>elseif</span>(<span>$ydataNum</span> > 1<span>) {
</span><span>115</span>                 <span>//</span><span> 多个系列的数据时</span>
<span>116</span>                 <span>foreach</span>(<span>$val</span> <span>as</span> <span>$ckey</span> => <span>$cval</span><span>) {
</span><span>117</span>                     
<span>118</span>                     <span>if</span>(<span>$ckey</span> == <span>count</span>(<span>$val</span>) - 1 ) <span>break</span><span>; 
</span><span>119</span>                     <span>$lineX</span> = <span>$chartLeft</span> + 3 + <span>$lineWidth</span>*<span>$ckey</span><span>;
</span><span>120</span>                     <span>$lineY2</span> = <span>$lineY</span>-<span>$barHeightMulti</span>*(<span>$val</span>[<span>$ckey</span>+1])/<span>$multi</span><span>;
</span><span>121</span>                     <span>//</span><span> 画折线</span>
<span>122</span>                     <span>if</span>(<span>$ckey</span> == <span>count</span>(<span>$val</span>) - 2<span> ) {
</span><span>123</span>                         imagefilledellipse(<span>$this</span>->image,<span>$lineX</span>+<span>$lineWidth</span>,<span>$lineY2</span>,10,10,<span>$color</span>[<span>$key</span>%<span>count</span>(<span>$this</span>-><span>color)]);
</span><span>124</span> <span>                    }
</span><span>125</span>                     imageline(<span>$this</span>->image,<span>$lineX</span>,<span>$lineY</span>-<span>$barHeightMulti</span>*<span>$cval</span>/<span>$multi</span>,<span>$lineX</span>+<span>$lineWidth</span>,<span>$lineY2</span>,<span>$color</span>[<span>$key</span>%<span>count</span>(<span>$this</span>-><span>color)]);
</span><span>126</span>                     imagefilledellipse(<span>$this</span>->image,<span>$lineX</span>,<span>$lineY</span>-<span>$barHeightMulti</span>*<span>$cval</span>/<span>$multi</span>,10,10,<span>$color</span>[<span>$key</span>%<span>count</span>(<span>$this</span>-><span>color)]);
</span><span>127</span> <span>                }
</span><span>128</span> <span>            }
</span><span>129</span>             
<span>130</span> <span>        }
</span><span>131</span>                 
<span>132</span>         <span>//</span><span> 绘画条形图的x坐标的值</span>
<span>133</span>         <span>foreach</span>(<span>$this</span>->xdata <span>as</span> <span>$key</span> => <span>$val</span><span>) {
</span><span>134</span>             <span>$lineX</span> = <span>$chartLeft</span> + <span>$lineWidth</span>*<span>$key</span> + <span>$lineWidth</span>/3 - 20<span>;
</span><span>135</span>             imagettftext(<span>$this</span>->image,10,-65,<span>$lineX</span>,<span>$lineY</span>+15,<span>$fontColor</span>,<span>$fontPath</span>,<span>$this</span>->xdata[<span>$key</span><span>]);
</span><span>136</span> <span>        }        
</span><span>137</span>         
<span>138</span>         <span>//</span><span> 两个系列数据以上时绘制小矩形及之后文字说明</span>
<span>139</span>         <span>if</span>(<span>$ydataNum</span> > 1<span>) {
</span><span>140</span>             <span>$x1</span> = <span>$lineChartWidth</span> + <span>$space</span><span>;
</span><span>141</span>             <span>$y1</span> = 20<span> ;
</span><span>142</span>             <span>foreach</span>(<span>$this</span>->seriesName <span>as</span> <span>$key</span> => <span>$val</span><span>) {
</span><span>143</span>                 imagefilledrectangle(<span>$this</span>->image,<span>$x1</span>,<span>$y1</span>,<span>$x1</span>+<span>$recWidth</span>,<span>$y1</span>+<span>$recHeight</span>,<span>$color</span>[<span>$key</span>%<span>count</span>(<span>$this</span>-><span>color)]);        
</span><span>144</span>                 imagettftext(<span>$this</span>->image,10,0,<span>$x1</span>+<span>$recWidth</span>+5,<span>$y1</span>+<span>$recHeight</span>-2,<span>$fontColor</span>,<span>$fontPath</span>,<span>$this</span>->seriesName[<span>$key</span><span>]);
</span><span>145</span>                 <span>$y1</span> += <span>$recHeight</span> + 10<span>;            
</span><span>146</span> <span>            }
</span><span>147</span> <span>        }
</span><span>148</span>         
<span>149</span>         <span>//</span><span> 绘画标题</span>
<span>150</span>         <span>$titleStart</span> = (<span>$this</span>->width - 5.5*<span>strlen</span>(<span>$this</span>->title))/2<span>;
</span><span>151</span>         imagettftext(<span>$this</span>->image,11,0,<span>$titleStart</span>,20,<span>$fontColor</span>,<span>$fontPath</span>,<span>$this</span>-><span>title);
</span><span>152</span>         
<span>153</span>         <span>//</span><span> 输出图片</span>
<span>154</span>         <span>header</span>("Content-Type:image/png"<span>);
</span><span>155</span>         imagepng ( <span>$this</span>-><span>image );
</span><span>156</span> <span>    }
</span><span>157</span>     
<span>158</span>     
<span>159</span>     <span>/*</span>
<span>160</span> <span>     * 私有方法，当数组为二元数组时，统计数组的长度 
</span><span>161</span> <span>     * Array arr 要做统计的数组
</span><span>162</span>      <span>*/</span>
<span>163</span>     <span>private</span> <span>function</span> arrayNum(<span>$arr</span><span>) {
</span><span>164</span>          <span>$num</span> = 0<span>;
</span><span>165</span>          <span>if</span>(<span>is_array</span>(<span>$arr</span><span>)) {
</span><span>166</span>             <span>$num</span>++<span>;
</span><span>167</span>             <span>for</span>(<span>$i</span> = 0; <span>$i</span> < <span>count</span>(<span>$arr</span>); <span>$i</span>++<span>){
</span><span>168</span>                 <span>if</span>(<span>is_array</span>(<span>$arr</span>[<span>$i</span><span>])) {
</span><span>169</span>                     <span>$num</span> = <span>count</span>(<span>$arr</span><span>);
</span><span>170</span>                     <span>break</span><span>;
</span><span>171</span> <span>                }
</span><span>172</span> <span>            }
</span><span>173</span> <span>         }
</span><span>174</span>          <span>return</span> <span>$num</span><span>;
</span><span>175</span> <span>    }
</span><span>176</span>     
<span>177</span>     <span>/*</span>
<span>178</span> <span>     * 私有方法，计算数组的深度 
</span><span>179</span> <span>     * Array arr 数组
</span><span>180</span>      <span>*/</span>
<span>181</span>     <span>private</span> <span>function</span> arrayDepth(<span>$arr</span><span>) {
</span><span>182</span>          <span>$num</span> = 0<span>;
</span><span>183</span>          <span>if</span>(<span>is_array</span>(<span>$arr</span><span>)) {
</span><span>184</span>             <span>$num</span>++<span>;
</span><span>185</span>             <span>for</span>(<span>$i</span> = 0; <span>$i</span> < <span>count</span>(<span>$arr</span>); <span>$i</span>++<span>){
</span><span>186</span>                 <span>if</span>(<span>is_array</span>(<span>$arr</span>[<span>$i</span><span>])) {
</span><span>187</span>                     <span>$num</span> += <span>$this</span>->arrayDepth(<span>$arr</span>[<span>$i</span><span>]);
</span><span>188</span>                     <span>break</span><span>;
</span><span>189</span> <span>                }
</span><span>190</span> <span>            }
</span><span>191</span> <span>         }
</span><span>192</span>          <span>return</span> <span>$num</span><span>;
</span><span>193</span> <span>    }
</span><span>194</span>     
<span>195</span>     <span>/*</span>
<span>196</span> <span>     * 私有方法，找到一组中的最大值 
</span><span>197</span> <span>     * Array arr 数字数组
</span><span>198</span>      <span>*/</span>
<span>199</span>      <span>private</span> <span>function</span> arrayMax(<span>$arr</span><span>) {
</span><span>200</span>         <span>$depth</span> = <span>$this</span>->arrayDepth(<span>$arr</span><span>);
</span><span>201</span>         <span>$max</span> = 0<span>;
</span><span>202</span>         <span>if</span>(<span>$depth</span> == 1<span>) {
</span><span>203</span>             <span>rsort</span>(<span>$arr</span><span>);
</span><span>204</span>             <span>$max</span> = <span>$arr</span>[0<span>];        
</span><span>205</span>         }<span>elseif</span>(<span>$depth</span> > 1<span>) {
</span><span>206</span>             <span>foreach</span>(<span>$arr</span> <span>as</span> <span>$val</span><span>) {
</span><span>207</span>                 <span>if</span>(<span>is_array</span>(<span>$val</span><span>)) {
</span><span>208</span>                     <span>if</span>(<span>$this</span>->arrayMax(<span>$val</span>) > <span>$max</span><span>) {
</span><span>209</span>                         <span>$max</span> = <span>$this</span>->arrayMax(<span>$val</span><span>);
</span><span>210</span> <span>                    }
</span><span>211</span>                 }<span>else</span><span>{                    
</span><span>212</span>                     <span>if</span>(<span>$val</span> > <span>$max</span><span>){
</span><span>213</span>                         <span>$max</span> = <span>$val</span><span>;
</span><span>214</span> <span>                    }
</span><span>215</span> <span>                }    
</span><span>216</span> <span>            }            
</span><span>217</span> <span>        }
</span><span>218</span>         <span>return</span> <span>$max</span><span>;
</span><span>219</span> <span>    }
</span><span>220</span>     
<span>221</span>     <span>/*</span>
<span>222</span> <span>     * 私有方法，求数组的平均值 
</span><span>223</span> <span>     * Array arr 数字数组
</span><span>224</span>      <span>*/</span>
<span>225</span>     <span>function</span> arrayAver(<span>$arr</span><span>) {
</span><span>226</span>         <span>$aver</span> = <span>array</span><span>();
</span><span>227</span>         <span>foreach</span>(<span>$arr</span> <span>as</span> <span>$val</span><span>) {
</span><span>228</span>             <span>if</span>(<span>is_array</span>(<span>$val</span><span>)) {
</span><span>229</span>                 <span>$aver</span> = <span>array_merge</span>(<span>$aver</span>,<span>$val</span><span>);
</span><span>230</span>             }<span>else</span><span>{
</span><span>231</span>                 <span>$aver</span>[] = <span>$val</span><span>;
</span><span>232</span> <span>            }
</span><span>233</span> <span>        }
</span><span>234</span>         <span>return</span> <span>array_sum</span>(<span>$aver</span>)/<span>count</span>(<span>$aver</span><span>);
</span><span>235</span> <span>    }
</span><span>236</span>     
<span>237</span>     <span>/*</span>
<span>238</span> <span>     * 私有方法，求数组中元素长度最大的值 
</span><span>239</span> <span>     * Array arr 字符串数组,必须是汉字
</span><span>240</span>      <span>*/</span>
<span>241</span>     <span>private</span> <span>function</span> arrayLengthMax(<span>$arr</span><span>) {
</span><span>242</span>         <span>$length</span> = 0<span>;
</span><span>243</span>         <span>foreach</span>(<span>$arr</span> <span>as</span> <span>$val</span><span>) {
</span><span>244</span>             <span>$length</span> = <span>strlen</span>(<span>$val</span>) > <span>$length</span> ? <span>strlen</span>(<span>$val</span>) : <span>$length</span><span>;
</span><span>245</span> <span>        }
</span><span>246</span>         <span>return</span> <span>$length</span>/3<span>;
</span><span>247</span> <span>    } 
</span><span>248</span>     
<span>249</span>     <span>//</span><span> 析构函数</span>
<span>250</span>     <span>function</span><span> __destruct(){
</span><span>251</span>         imagedestroy(<span>$this</span>-><span>image);
</span><span>252</span> <span>    }
</span><span>253</span>  }

 

测试代码如下：

<span>1</span>  <span>$xdata</span> = <span>array</span>('测试一','测试二','测试三','测试四','测试五','测试六','测试七','测试八','测试九'<span>);
</span><span>2</span>  <span>$ydata</span> = <span>array</span>(<span>array</span>(29,30,45,54,65,45,76,23,54),<span>array</span>(89,60,90,23,35,45,56,23,56<span>));
</span><span>3</span>  <span>$color</span> = <span>array</span><span>();
</span><span>4</span>  <span>$seriesName</span> = <span>array</span>("七月","八月"<span>);
</span><span>5</span>  <span>$title</span> = "测试数据"<span>;
</span><span>6</span>  <span>$Img</span> = <span>new</span> Chart(<span>$title</span>,<span>$xdata</span>,<span>$ydata</span>,<span>$seriesName</span><span>);
</span><span>7 </span> <span>$Img</span>->paintLineChart();

 

效果图如下：

http://www.bkjia.com/PHPjc/1068248.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/1068248.htmlTechArticlephp中用GD绘制折线图，gd绘制折线 php中用GD绘制折线图，代码如下： 1 Class Chart{ 2 private $image ; // 定义图像 3 private $title ; // 定义标题 4 priv...