上一篇进行了一些简单3D图形实例,本篇介绍自定义及矢量图实例。首先绘制一个三尖角星体,分别由“前面”,“后面”和三个“侧面”组成。
自定义多边形
代码:
以下为引用的内容: <span style="COLOR: blue"><?php require_once</span><span style="COLOR: purple">(</span><span style="COLOR: olive">'Image/3D.php'</span><span style="COLOR: purple">)</span>; <span style="COLOR: blue">$image </span><span style="COLOR: purple">= </span><span style="COLOR: blue">new </span>Image_3D<span style="COLOR: purple">()</span>; <span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>setColor<span style="COLOR: purple">(</span><span style="COLOR: blue">new </span>Image_3D_Color<span style="COLOR: purple">(</span><span style="COLOR: red">255</span><span style="COLOR: purple">, </span><span style="COLOR: red">255</span><span style="COLOR: purple">, </span><span style="COLOR: red">255</span><span style="COLOR: purple">))</span>; <span style="COLOR: green">//创建光源 </span><span style="COLOR: blue">$light1 </span><span style="COLOR: purple">= </span><span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>createLight<span style="COLOR: purple">(</span><span style="COLOR: olive">'light'</span><span style="COLOR: purple">,</span><span style="COLOR: blue">array</span><span style="COLOR: purple">(-</span><span style="COLOR: red">50</span><span style="COLOR: purple">, -</span><span style="COLOR: red">50</span><span style="COLOR: purple">, -</span><span style="COLOR: red">50</span><span style="COLOR: purple">))</span>; <span style="COLOR: blue">$light1</span><span style="COLOR: purple">-></span>setColor<span style="COLOR: purple">(</span><span style="COLOR: blue">new </span>Image_3D_Color<span style="COLOR: purple">(</span><span style="COLOR: red">100</span><span style="COLOR: purple">, </span><span style="COLOR: red">250</span><span style="COLOR: purple">, </span><span style="COLOR: red">100</span><span style="COLOR: purple">))</span>; <span style="COLOR: blue">$light2 </span><span style="COLOR: purple">= </span><span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>createLight<span style="COLOR: purple">(</span><span style="COLOR: olive">'light'</span><span style="COLOR: purple">,</span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">50</span><span style="COLOR: purple">, -</span><span style="COLOR: red">50</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">))</span>; <span style="COLOR: blue">$light2</span><span style="COLOR: purple">-></span>setColor<span style="COLOR: purple">(</span><span style="COLOR: blue">new </span>Image_3D_Color<span style="COLOR: purple">(</span><span style="COLOR: red">100</span><span style="COLOR: purple">, </span><span style="COLOR: red">100</span><span style="COLOR: purple">, </span><span style="COLOR: red">250</span><span style="COLOR: purple">))</span>; <span style="COLOR: blue">$light3 </span><span style="COLOR: purple">= </span><span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>createLight<span style="COLOR: purple">(</span><span style="COLOR: olive">'light'</span><span style="COLOR: purple">,</span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">50</span><span style="COLOR: purple">, </span><span style="COLOR: red">50</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">))</span>; <span style="COLOR: blue">$light3</span><span style="COLOR: purple">-></span>setColor<span style="COLOR: purple">(</span><span style="COLOR: blue">new </span>Image_3D_Color<span style="COLOR: purple">(</span><span style="COLOR: red">50</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">, </span><span style="COLOR: red">100</span><span style="COLOR: purple">))</span>; <span style="COLOR: green">//创建多边形数组 </span><span style="COLOR: blue">$polygons </span><span style="COLOR: purple">= </span><span style="COLOR: blue">array</span><span style="COLOR: purple">()</span>; <span style="COLOR: green">//前面点坐标 </span><span style="COLOR: blue">$polygons</span><span style="COLOR: purple">[] = </span><span style="COLOR: blue">array</span><span style="COLOR: purple">( </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">0</span><span style="COLOR: purple">, -</span><span style="COLOR: red">120</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(-</span><span style="COLOR: red">18</span><span style="COLOR: purple">, -</span><span style="COLOR: red">12</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(-</span><span style="COLOR: red">86</span><span style="COLOR: purple">, </span><span style="COLOR: red">48</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">0</span><span style="COLOR: purple">, </span><span style="COLOR: red">18</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">86</span><span style="COLOR: purple">, </span><span style="COLOR: red">48</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">18</span><span style="COLOR: purple">, -</span><span style="COLOR: red">12</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">) )</span>; <span style="COLOR: green">//后面点坐标 </span><span style="COLOR: blue">$polygons</span><span style="COLOR: purple">[] = </span><span style="COLOR: blue">array</span><span style="COLOR: purple">( </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">0</span><span style="COLOR: purple">, -</span><span style="COLOR: red">120</span><span style="COLOR: purple">, </span><span style="COLOR: red">60</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(-</span><span style="COLOR: red">18</span><span style="COLOR: purple">, -</span><span style="COLOR: red">12</span><span style="COLOR: purple">, </span><span style="COLOR: red">60</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(-</span><span style="COLOR: red">86</span><span style="COLOR: purple">, </span><span style="COLOR: red">48</span><span style="COLOR: purple">, </span><span style="COLOR: red">60</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">0</span><span style="COLOR: purple">, </span><span style="COLOR: red">18</span><span style="COLOR: purple">, </span><span style="COLOR: red">60</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">86</span><span style="COLOR: purple">, </span><span style="COLOR: red">48</span><span style="COLOR: purple">, </span><span style="COLOR: red">60</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">18</span><span style="COLOR: purple">, -</span><span style="COLOR: red">12</span><span style="COLOR: purple">, </span><span style="COLOR: red">60</span><span style="COLOR: purple">) )</span>; <span style="COLOR: green">//三侧面点坐标 </span><span style="COLOR: blue">$polygons</span><span style="COLOR: purple">[] = </span><span style="COLOR: blue">array</span><span style="COLOR: purple">( </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">0</span><span style="COLOR: purple">, -</span><span style="COLOR: red">120</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(-</span><span style="COLOR: red">18</span><span style="COLOR: purple">, -</span><span style="COLOR: red">12</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(-</span><span style="COLOR: red">86</span><span style="COLOR: purple">, </span><span style="COLOR: red">48</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(-</span><span style="COLOR: red">86</span><span style="COLOR: purple">, </span><span style="COLOR: red">48</span><span style="COLOR: purple">, </span><span style="COLOR: red">60</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(-</span><span style="COLOR: red">18</span><span style="COLOR: purple">, -</span><span style="COLOR: red">12</span><span style="COLOR: purple">, </span><span style="COLOR: red">60</span><span style="COLOR: purple">),</span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">0</span><span style="COLOR: purple">, -</span><span style="COLOR: red">120</span><span style="COLOR: purple">, </span><span style="COLOR: red">60</span><span style="COLOR: purple">) )</span>; <span style="COLOR: blue">$polygons</span><span style="COLOR: purple">[] = </span><span style="COLOR: blue">array</span><span style="COLOR: purple">( </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(-</span><span style="COLOR: red">86</span><span style="COLOR: purple">, </span><span style="COLOR: red">48</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">0</span><span style="COLOR: purple">, </span><span style="COLOR: red">18</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">86</span><span style="COLOR: purple">, </span><span style="COLOR: red">48</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">86</span><span style="COLOR: purple">, </span><span style="COLOR: red">48</span><span style="COLOR: purple">, </span><span style="COLOR: red">60</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">0</span><span style="COLOR: purple">, </span><span style="COLOR: red">18</span><span style="COLOR: purple">, </span><span style="COLOR: red">60</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(-</span><span style="COLOR: red">86</span><span style="COLOR: purple">, </span><span style="COLOR: red">48</span><span style="COLOR: purple">, </span><span style="COLOR: red">60</span><span style="COLOR: purple">) )</span>; <span style="COLOR: blue">$polygons</span><span style="COLOR: purple">[] = </span><span style="COLOR: blue">array</span><span style="COLOR: purple">( </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">86</span><span style="COLOR: purple">, </span><span style="COLOR: red">48</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">18</span><span style="COLOR: purple">, -</span><span style="COLOR: red">12</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">0</span><span style="COLOR: purple">, -</span><span style="COLOR: red">120</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">0</span><span style="COLOR: purple">, -</span><span style="COLOR: red">120</span><span style="COLOR: purple">, </span><span style="COLOR: red">60</span><span style="COLOR: purple">), </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">18</span><span style="COLOR: purple">, -</span><span style="COLOR: red">12</span><span style="COLOR: purple">, </span><span style="COLOR: red">60</span><span style="COLOR: purple">),</span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: red">86</span><span style="COLOR: purple">, </span><span style="COLOR: red">48</span><span style="COLOR: purple">, </span><span style="COLOR: red">60</span><span style="COLOR: purple">) )</span>; <span style="COLOR: green">//绘制3D图像 </span><span style="COLOR: blue">foreach </span><span style="COLOR: purple">(</span><span style="COLOR: blue">$polygons as $poly</span><span style="COLOR: purple">) { </span><span style="COLOR: blue">$points </span><span style="COLOR: purple">= </span><span style="COLOR: blue">array</span><span style="COLOR: purple">()</span>; <span style="COLOR: blue">foreach </span><span style="COLOR: purple">(</span><span style="COLOR: blue">$poly as $set</span><span style="COLOR: purple">) { </span><span style="COLOR: blue">$points</span><span style="COLOR: purple">[] = </span><span style="COLOR: blue">new </span>Image_3D_Point<span style="COLOR: purple">(</span><span style="COLOR: blue">$set</span><span style="COLOR: purple">[</span><span style="COLOR: red">0</span><span style="COLOR: purple">], </span><span style="COLOR: blue">$set</span><span style="COLOR: purple">[</span><span style="COLOR: red">1</span><span style="COLOR: purple">], </span><span style="COLOR: blue">$set</span><span style="COLOR: purple">[</span><span style="COLOR: red">2</span><span style="COLOR: purple">])</span>; <span style="COLOR: purple">} </span><span style="COLOR: blue">$p </span><span style="COLOR: purple">= </span><span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>createObject<span style="COLOR: purple">(</span><span style="COLOR: olive">'polygon'</span><span style="COLOR: purple">, </span><span style="COLOR: blue">$points</span><span style="COLOR: purple">)</span>; <span style="COLOR: blue">$p</span><span style="COLOR: purple">-></span>setColor<span style="COLOR: purple">(</span><span style="COLOR: blue">new </span>Image_3D_Color<span style="COLOR: purple">(</span><span style="COLOR: red">255</span><span style="COLOR: purple">, </span><span style="COLOR: red">255</span><span style="COLOR: purple">, </span><span style="COLOR: red">255</span><span style="COLOR: purple">))</span>; <span style="COLOR: purple">} </span><span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>transform<span style="COLOR: purple">(</span><span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>createMatrix<span style="COLOR: purple">(</span><span style="COLOR: olive">'Rotation'</span><span style="COLOR: purple">, </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(-</span><span style="COLOR: red">10</span><span style="COLOR: purple">, -</span><span style="COLOR: red">25</span><span style="COLOR: purple">, -</span><span style="COLOR: red">15</span><span style="COLOR: purple">)))</span>; <span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>createRenderer<span style="COLOR: purple">(</span><span style="COLOR: olive">'perspectively'</span><span style="COLOR: purple">)</span>; <span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>createDriver<span style="COLOR: purple">(</span><span style="COLOR: olive">'gd'</span><span style="COLOR: purple">)</span>; <span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>render<span style="COLOR: purple">(</span><span style="COLOR: red">300</span><span style="COLOR: purple">, </span><span style="COLOR: red">300</span><span style="COLOR: purple">, </span><span style="COLOR: olive">'anim.png'</span><span style="COLOR: purple">)</span>; <span style="COLOR: blue">echo </span><span style="COLOR: olive">'<img src="/static/imghwm/default1.png" data-src="anim.png" class="lazy" alt="PHP绘制3D图形之自定义图形及矢量图_PHP" >'</span>; <span style="COLOR: blue">?></span> |
效果图:
矢量图
可缩放的矢量图形(Scalable Vector Graphics,SVG)文件格式是组成2D图像的矢量XML文件。 在2001年,W3C对该格式进行了标准化,但其在Web方面的使用因为浏览器显示SVG文件的牵制而不很流行。 目前,最好的选择是Firefox它有内置的SVG支持,或具有Adobe SVG插件的IE。下面通过一个实例生成SVG文件。
代码:
以下为引用的内容: <span style="COLOR: blue"><?php require_once</span><span style="COLOR: purple">(</span><span style="COLOR: olive">'Image/3D.php'</span><span style="COLOR: purple">)</span>; <span style="COLOR: blue">$rot_x </span><span style="COLOR: purple">= </span><span style="COLOR: red">45</span>; <span style="COLOR: blue">$rot_y </span><span style="COLOR: purple">= </span><span style="COLOR: red">45</span>; <span style="COLOR: blue">$rot_z </span><span style="COLOR: purple">= </span><span style="COLOR: red">10</span>; <span style="COLOR: blue">$image </span><span style="COLOR: purple">= </span><span style="COLOR: blue">new </span>Image_3D<span style="COLOR: purple">()</span>; <span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>setColor<span style="COLOR: purple">(</span><span style="COLOR: blue">new </span>Image_3D_Color<span style="COLOR: purple">(</span><span style="COLOR: red">255</span><span style="COLOR: purple">, </span><span style="COLOR: red">255</span><span style="COLOR: purple">, </span><span style="COLOR: red">255</span><span style="COLOR: purple">))</span>; <span style="COLOR: blue">for </span><span style="COLOR: purple">(</span><span style="COLOR: blue">$x</span><span style="COLOR: purple">=</span><span style="COLOR: red">0</span>; <span style="COLOR: blue">$x </span><span style="COLOR: purple">< </span><span style="COLOR: red">4</span>; <span style="COLOR: blue">$x</span><span style="COLOR: purple">++) { </span><span style="COLOR: blue">for </span><span style="COLOR: purple">(</span><span style="COLOR: blue">$y</span><span style="COLOR: purple">=</span><span style="COLOR: red">0</span>; <span style="COLOR: blue">$y </span><span style="COLOR: purple">< </span><span style="COLOR: red">4</span>; <span style="COLOR: blue">$y</span><span style="COLOR: purple">++) { </span><span style="COLOR: blue">for </span><span style="COLOR: purple">(</span><span style="COLOR: blue">$z</span><span style="COLOR: purple">=</span><span style="COLOR: red">0</span>; <span style="COLOR: blue">$z </span><span style="COLOR: purple">< </span><span style="COLOR: red">4</span>; <span style="COLOR: blue">$z</span><span style="COLOR: purple">++) { </span><span style="COLOR: green">//创建球体 </span><span style="COLOR: blue">$sphere </span><span style="COLOR: purple">= </span><span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>createObject<span style="COLOR: purple">(</span><span style="COLOR: olive">'sphere'</span><span style="COLOR: purple">, </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: olive">'r' </span>=> <span style="COLOR: red">25</span><span style="COLOR: purple">, </span><span style="COLOR: olive">'detail' </span>=> <span style="COLOR: red">3</span><span style="COLOR: purple">))</span>; <span style="COLOR: green">//后面150用于设置图像透明度 </span><span style="COLOR: blue">$sphere</span><span style="COLOR: purple">-></span>setColor<span style="COLOR: purple">(</span><span style="COLOR: blue">new </span>Image_3D_Color<span style="COLOR: purple">(</span><span style="COLOR: red">255</span><span style="COLOR: purple">, </span><span style="COLOR: red">162</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">, </span><span style="COLOR: red">150</span><span style="COLOR: purple">))</span>; <span style="COLOR: blue">$sphere</span><span style="COLOR: purple">-></span>transform<span style="COLOR: purple">(</span><span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>createMatrix<span style="COLOR: purple">(</span><span style="COLOR: olive">'Move'</span><span style="COLOR: purple">, </span><span style="COLOR: blue">array</span><span style="COLOR: purple">((</span><span style="COLOR: blue">$x </span><span style="COLOR: purple">* </span><span style="COLOR: red">75</span><span style="COLOR: purple">) + </span><span style="COLOR: red">50</span><span style="COLOR: purple">, </span><span style="COLOR: blue">$y </span><span style="COLOR: purple">* </span><span style="COLOR: red">75</span><span style="COLOR: purple">, </span><span style="COLOR: blue">$z </span><span style="COLOR: purple">* </span><span style="COLOR: red">75</span><span style="COLOR: purple">)))</span>; <span style="COLOR: blue">$sphere</span><span style="COLOR: purple">-></span>transform<span style="COLOR: purple">(</span><span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>createMatrix<span style="COLOR: purple">(</span><span style="COLOR: olive">'Rotation'</span><span style="COLOR: purple">, </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(</span><span style="COLOR: blue">$rot_x</span><span style="COLOR: purple">, </span><span style="COLOR: blue">$rot_y</span><span style="COLOR: purple">, </span><span style="COLOR: blue">$rot_z</span><span style="COLOR: purple">)))</span>; <span style="COLOR: purple">} } } </span><span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>transform<span style="COLOR: purple">(</span><span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>createMatrix<span style="COLOR: purple">(</span><span style="COLOR: olive">'Move'</span><span style="COLOR: purple">, </span><span style="COLOR: blue">array</span><span style="COLOR: purple">(-</span><span style="COLOR: red">225</span><span style="COLOR: purple">, -</span><span style="COLOR: red">100</span><span style="COLOR: purple">, </span><span style="COLOR: red">0</span><span style="COLOR: purple">)))</span>; <span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>createRenderer<span style="COLOR: purple">(</span><span style="COLOR: olive">'perspectively'</span><span style="COLOR: purple">)</span>; <span style="COLOR: green">//使用SVG驱动生成矢量图 </span><span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>createDriver<span style="COLOR: purple">(</span><span style="COLOR: olive">'svg'</span><span style="COLOR: purple">)</span>; <span style="COLOR: blue">$image</span><span style="COLOR: purple">-></span>render<span style="COLOR: purple">(</span><span style="COLOR: red">600</span><span style="COLOR: purple">, </span><span style="COLOR: red">600</span><span style="COLOR: purple">, </span><span style="COLOR: olive">'anim.svg'</span><span style="COLOR: purple">)</span>; header<span style="COLOR: purple">(</span><span style="COLOR: olive">'Location:anim.svg'</span><span style="COLOR: purple">)</span>; <span style="COLOR: blue">?></span> |
效果图:
输出的SVG文件打开后,其格式即为XML:
以下为引用的内容: <?xml version="1.0" ?> <span style="COLOR: blue"><</span>!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> <span style="COLOR: blue"><</span><span style="COLOR: maroon">svg </span><span style="COLOR: red">xmlns</span><span style="COLOR: blue">="http://www.w3.org/2000/svg" </span><span style="COLOR: red">x</span><span style="COLOR: blue">="0" </span><span style="COLOR: red">y</span><span style="COLOR: blue">="0" </span><span style="COLOR: red">width</span><span style="COLOR: blue">="600" </span><span style="COLOR: red">height</span><span style="COLOR: blue">="600"> <</span><span style="COLOR: maroon">defs </span><span style="COLOR: red">id</span><span style="COLOR: blue">="defs16387"> </</span><span style="COLOR: maroon">defs</span><span style="COLOR: blue">> <</span><span style="COLOR: maroon">polygon </span><span style="COLOR: red">id</span><span style="COLOR: blue">="background1" </span><span style="COLOR: red">points</span><span style="COLOR: blue">="0,0 600,0 600,600 0,600" </span><span style="COLOR: red">style</span><span style="COLOR: blue">="fill: #ffffff; fill-opacity: 1.00; stroke: none;" /> <</span><span style="COLOR: maroon">polygon </span><span style="COLOR: red">points</span><span style="COLOR: blue">="325.87,264.90 323.53,258.51 321.87,262.52" </span><span style="COLOR: red">style</span><span style="COLOR: blue">="fill: #ffa200; fill-opacity: 0.41; stroke: none;" /> <</span><span style="COLOR: maroon">polygon </span><span style="COLOR: red">points</span><span style="COLOR: blue">="319.40,256.07 321.87,262.52 323.53,258.51" </span><span style="COLOR: red">style</span><span style="COLOR: blue">="fill: #ffa200; fill-opacity: 0.41; stroke: none;" /> </span>... ... <span style="COLOR: blue"><</span><span style="COLOR: maroon">polygon </span><span style="COLOR: red">points</span><span style="COLOR: blue">="230.72,174.08 236.47,190.12 226.95,185.47" </span><span style="COLOR: red">style</span><span style="COLOR: blue">="fill: #ffa200; fill-opacity: 0.41; stroke: none;" /> <</span><span style="COLOR: maroon">polygon </span><span style="COLOR: red">points</span><span style="COLOR: blue">="230.72,174.08 252.69,180.70 236.47,190.12" </span><span style="COLOR: red">style</span><span style="COLOR: blue">="fill: #ffa200; fill-opacity: 0.41; stroke: none;" /> </</span><span style="COLOR: maroon">svg</span><span style="COLOR: blue">></span> |
作者: Gnie 出处: {GnieTech} (http://www.cnblogs.com/gnielee/) 版权声明: 本文的版权归作者与博客园共有。转载时须注明本文的详细链接,否则作者将保留追究其法律责任。 |

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.

In PHP, use the clone keyword to create a copy of the object and customize the cloning behavior through the \_\_clone magic method. 1. Use the clone keyword to make a shallow copy, cloning the object's properties but not the object's properties. 2. The \_\_clone method can deeply copy nested objects to avoid shallow copying problems. 3. Pay attention to avoid circular references and performance problems in cloning, and optimize cloning operations to improve efficiency.

PHP is suitable for web development and content management systems, and Python is suitable for data science, machine learning and automation scripts. 1.PHP performs well in building fast and scalable websites and applications and is commonly used in CMS such as WordPress. 2. Python has performed outstandingly in the fields of data science and machine learning, with rich libraries such as NumPy and TensorFlow.

Key players in HTTP cache headers include Cache-Control, ETag, and Last-Modified. 1.Cache-Control is used to control caching policies. Example: Cache-Control:max-age=3600,public. 2. ETag verifies resource changes through unique identifiers, example: ETag: "686897696a7c876b7e". 3.Last-Modified indicates the resource's last modification time, example: Last-Modified:Wed,21Oct201507:28:00GMT.

In PHP, password_hash and password_verify functions should be used to implement secure password hashing, and MD5 or SHA1 should not be used. 1) password_hash generates a hash containing salt values to enhance security. 2) Password_verify verify password and ensure security by comparing hash values. 3) MD5 and SHA1 are vulnerable and lack salt values, and are not suitable for modern password security.

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

PHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.

The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.


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