简体中文(ZH-CN) English(EN) 繁体中文(ZH-TW) 日本語(JA) 한국어(KO) Melayu(MS) Français(FR) Deutsch(DE)
Home > Backend Development > PHP Tutorial > body text

PHP operation Imagick library printing numerical matrix_PHP tutorial

WBOY
Release： 2016-07-15 13:26:35
Original
961 people have browsed it

PHP can achieve many picture effects by operating the Imagick library, such as printing an 8*10 digital matrix on a picture. The method to achieve the above effect is as follows:

PHP operates Imagick library code

<ol class="dp-c">
<li class="alt"><span><span class="comment"><font color="#008200">//格子的尺寸 </font></span><span> </span></span></li>
<li class="">
<span></span><span class="vars"><font color="#dd0000">$grid_font_size</font></span><span> = 18;           </span><span class="comment"><font color="#008200">//字体大小 </font></span><span> </span>
</li>
<li class="alt">
<span></span><span class="vars"><font color="#dd0000">$grid_font_color</font></span><span> = </span><span class="string"><font color="#0000ff">"#000"</font></span><span>;      </span><span class="comment"><font color="#008200">//字体颜色 </font></span><span> </span>
</li>
<li class="">
<span></span><span class="vars"><font color="#dd0000">$grid_width</font></span><span> = 36;               </span><span class="comment"><font color="#008200">//格子的宽度 </font></span><span> </span>
</li>
<li class="alt">
<span></span><span class="vars"><font color="#dd0000">$grid_height</font></span><span> = 24;              </span><span class="comment"><font color="#008200">//格子的高度 </font></span><span> </span>
</li>
<li class="">
<span></span><span class="vars"><font color="#dd0000">$grid_origin_x</font></span><span> = 15;           </span><span class="comment"><font color="#008200">//左上角的数字的起始横坐标 </font></span><span> </span>
</li>
<li class="alt">
<span></span><span class="vars"><font color="#dd0000">$grid_origin_y</font></span><span> = 98;            </span><span class="comment"><font color="#008200">//左上角的数字的起始纵坐标 </font></span><span> </span>
</li>
<li class=""><span> </span></li>
<li class="alt"><span> #原图  </span></li>
<li class="">
<span> </span><span class="vars"><font color="#dd0000">$image</font></span><span> = </span><span class="keyword"><strong><font color="#006699">new</font></strong></span><span> Imagick(</span><span class="string"><font color="#0000ff">'background.jpg'</font></span><span>);  </span>
</li>
<li class="alt"><span>   </span></li>
<li class=""><span> #写入密保卡数据  </span></li>
<li class="alt">
<span> </span><span class="vars"><font color="#dd0000">$tmp_grid_origin_x</font></span><span> = </span><span class="vars"><font color="#dd0000">$grid_origin_x</font></span><span>;  </span>
</li>
<li class="">
<span> </span><span class="vars"><font color="#dd0000">$tmp_grid_origin_y</font></span><span> = </span><span class="vars"><font color="#dd0000">$grid_origin_y</font></span><span>;  </span>
</li>
<li class="alt">
<span> </span><span class="keyword"><strong><font color="#006699">foreach</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$pData</font></span><span> </span><span class="keyword"><strong><font color="#006699">as</font></strong></span><span> </span><span class="vars"><font color="#dd0000">$k</font></span><span> => </span><span class="vars"><font color="#dd0000">$v</font></span><span>){  </span>
</li>
<li class="">
<span>   </span><span class="keyword"><strong><font color="#006699">foreach</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$v</font></span><span> </span><span class="keyword"><strong><font color="#006699">as</font></strong></span><span> </span><span class="vars"><font color="#dd0000">$k_grid_data</font></span><span> => </span><span class="vars"><font color="#dd0000">$v_grid_data</font></span><span>){  </span>
</li>
<li class="alt">
<span>     </span><span class="vars"><font color="#dd0000">$tmp_grid_origin_x</font></span><span> += </span><span class="vars"><font color="#dd0000">$grid_width</font></span><span>;  </span>
</li>
<li class="">
<span>     </span><span class="vars"><font color="#dd0000">$draw</font></span><span> = </span><span class="keyword"><strong><font color="#006699">new</font></strong></span><span> ImagickDraw();  </span>
</li>
<li class="alt">
<span>     </span><span class="vars"><font color="#dd0000">$draw</font></span><span>->setFillColor(</span><span class="vars"><font color="#dd0000">$grid_font_color</font></span><span>);  </span>
</li>
<li class="">
<span>     </span><span class="vars"><font color="#dd0000">$draw</font></span><span>->setFontSize(</span><span class="vars"><font color="#dd0000">$grid_font_size</font></span><span>);  </span>
</li>
<li class="alt">
<span>     </span><span class="vars"><font color="#dd0000">$draw</font></span><span>->annotation(</span><span class="vars"><font color="#dd0000">$tmp_grid_origin_x</font></span><span>, </span><span class="vars"><font color="#dd0000">$tmp_grid_origin_y</font></span><span>, </span><span class="vars"><font color="#dd0000">$v_grid_data</font></span><span>);  </span>
</li>
<li class="">
<span>     </span><span class="vars"><font color="#dd0000">$image</font></span><span>->drawImage(</span><span class="vars"><font color="#dd0000">$draw</font></span><span>);  </span>
</li>
<li class="alt"><span>   }  </span></li>
<li class="">
<span>   </span><span class="vars"><font color="#dd0000">$tmp_grid_origin_x</font></span><span> = </span><span class="vars"><font color="#dd0000">$grid_origin_x</font></span><span>;  </span>
</li>
<li class="alt">
<span>   </span><span class="vars"><font color="#dd0000">$tmp_grid_origin_y</font></span><span> += </span><span class="vars"><font color="#dd0000">$grid_height</font></span><span>;  </span>
</li>
<li class=""><span> }  </span></li>
<li class="alt">
<span> </span><span class="vars"><font color="#dd0000">$image</font></span><span>->writeImage(</span><span class="vars"><font color="#dd0000">$ks_ImageSrcPath</font></span><span>. </span><span class="vars"><font color="#dd0000">$pSN</font></span><span>. </span><span class="string"><font color="#0000ff">'.jpg'</font></span><span>);  </span>
</li>
<li class=""><span> </span></li>
<li class="alt"><span> #释放资源  </span></li>
<li class="">
<span> </span><span class="vars"><font color="#dd0000">$image</font></span><span>->destroy();  </span>
</li>
<li class="alt">
<span> </span><span class="vars"><font color="#dd0000">$draw</font></span><span>->destroy();  </span>
</li>
<li class=""><span> </span></li>
</ol>
Copy after login

The consequence of this is that it must be instantiated every time it is looped An ImagickDraw and executes the drawImage method, which consumes a lot of CPU resources.

can be optimized from the following two points:

1. It is not necessary to execute the new operation every time, one is enough;

2. It is not necessary to execute the drawImage method every time, Once is enough. In other words, the annotation method seems to have the meaning of "additional", so you don't have to worry about the later overwriting the previous one;

The optimized code for PHP operation Imagick library is as follows: 

<ol class="dp-c">
<li class="alt"><span><span class="vars"><font color="#dd0000">$draw</font></span><span> = </span><span class="keyword"><strong><font color="#006699">new</font></strong></span><span> ImagickDraw();  </span></span></li>
<li class="">
<span></span><span class="vars"><font color="#dd0000">$draw</font></span><span>->setFillColor(</span><span class="vars"><font color="#dd0000">$grid_font_color</font></span><span>);  </span>
</li>
<li class="alt">
<span></span><span class="vars"><font color="#dd0000">$draw</font></span><span>->setFontSize(</span><span class="vars"><font color="#dd0000">$grid_font_size</font></span><span>);  </span>
</li>
<li class="">
<span></span><span class="keyword"><strong><font color="#006699">foreach</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$pData</font></span><span> </span><span class="keyword"><strong><font color="#006699">as</font></strong></span><span> </span><span class="vars"><font color="#dd0000">$k</font></span><span> => </span><span class="vars"><font color="#dd0000">$v</font></span><span>){  </span>
</li>
<li class="alt">
<span>  </span><span class="keyword"><strong><font color="#006699">foreach</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$v</font></span><span> </span><span class="keyword"><strong><font color="#006699">as</font></strong></span><span> </span><span class="vars"><font color="#dd0000">$k_grid_data</font></span><span> => </span><span class="vars"><font color="#dd0000">$v_grid_data</font></span><span>){  </span>
</li>
<li class="">
<span>    </span><span class="vars"><font color="#dd0000">$tmp_grid_origin_x</font></span><span> += </span><span class="vars"><font color="#dd0000">$grid_width</font></span><span>;  </span>
</li>
<li class="alt">
<span>    </span><span class="vars"><font color="#dd0000">$draw</font></span><span>->annotation(</span><span class="vars"><font color="#dd0000">$tmp_grid_origin_x</font></span><span>, </span><span class="vars"><font color="#dd0000">$tmp_grid_origin_y</font></span><span>, </span><span class="vars"><font color="#dd0000">$v_grid_data</font></span><span>);  </span>
</li>
<li class=""><span>  }  </span></li>
<li class="alt">
<span>   </span><span class="vars"><font color="#dd0000">$tmp_grid_origin_x</font></span><span> = </span><span class="vars"><font color="#dd0000">$grid_origin_x</font></span><span>;  </span>
</li>
<li class="">
<span>   </span><span class="vars"><font color="#dd0000">$tmp_grid_origin_y</font></span><span> += </span><span class="vars"><font color="#dd0000">$grid_height</font></span><span>;  </span>
</li>
<li class="alt"><span>}  </span></li>
<li class="">
<span></span><span class="vars"><font color="#dd0000">$image</font></span><span>->drawImage(</span><span class="vars"><font color="#dd0000">$draw</font></span><span>);  </span>
</li>
</ol>
Copy after login


www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/446600.htmlTechArticlePHP can achieve many picture effects by operating the Imagick library, such as printing 8*10 numbers on a picture matrix. The method to achieve the above effect is as follows: PHP operation Imagick library code //The ruler of the grid...
Related labels：
imagick php Can picture accomplish Library Print operate Effect number Compare matrix
source：php.cn
Previous article：A brief analysis of the use of PHP regular expression character sets_PHP tutorial Next article：PHP regular expression function learning summary_PHP tutorial
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
How to list data in a section by ID using while loop in PHP? I have a mysql table with these columns: series_id, series_color, product_name In the outp...
From 2023-11-17 20:03:03
0
1
290
Call to undefined function create_function() I get this message on the home page of the website: Fatal error: Uncaught error: calling /...
From 2023-11-16 19:00:36
0
1
277
<?php //Given a year, month and day, output the day of the year that the date is (note that leap year 4 100 400) <?php //Given a year, month and day, output the day of the year that the date is (no...
From 2023-11-14 23:55:21
0
1
79
PHP trim unicode spaces I'm trying to trim unicode spaces such as this character and I was able to do it using thi...
From 2023-11-13 08:49:45
0
2
398
TYPO3 V11: "PHP warning: undefined array key", $this->request->getArguments() is empty I'm a new user of typo3, I made a plugin to show users and use the search bar to filter th...
From 2023-11-12 21:35:09
0
1
362
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn：Public welfare online PHP training，Help PHP learners grow quickly！