Visualization technology of PHP data structure

PHP There are three main technologies for visualizing data structures: Graphviz: an open source tool that creates graphical representations such as charts, directed acyclic graphs, and decision trees. D3.js: JavaScript library for creating interactive, data-driven visualizations, generating HTML and data from PHP and visualizing on the client side using D3.js. ASCIIFlow: A library for creating textual representation of data flow diagrams, suitable for visualization of processes and algorithms.

PHP Data Structure Visualization Technology

Data visualization is crucial for understanding complex data structures and algorithms. This article will explore several techniques for visualizing PHP data structures and provide practical examples.

Graphviz

Graphviz is a popular open source visualization tool that allows you to create a variety of graphical representations, including charts, directed acyclic graphs, and decision trees.

Install Graphviz

On Ubuntu, install Graphviz using the following command:

sudo apt-get install graphviz

Visualize the tree using Graphviz

<?php
use GraphViz\GraphViz;

$graph = new GraphViz();
$graph->addCluster('cluster_0');

$node1 = $graph->node('node_1');
$node2 = $graph->node('node_2');
$node3 = $graph->node('node_3');

$edge1 = $graph->edge($node1, $node2);
$edge2 = $graph->edge($node1, $node3);

$graph->output('png', 'tree.png');
?>

D3.js

D3.js is a JavaScript library for creating interactive, data-driven visualizations. It can be used with PHP to generate HTML and data from the server side and then visualize it on the client side using D3.js.

Install D3.js

D3.js can be downloaded from its website: https://d3js.org/

Use D3 .js visual bar chart

<?php
$data = array(
    array("name" => "John", "score" => 90),
    array("name" => "Mary", "score" => 80),
    array("name" => "Bob", "score" => 70)
);
?>

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var data = <?php echo json_encode($data); ?>;

var svg = d3.select("body").append("svg")
  .attr("width", 500)
  .attr("height", 300);

svg.selectAll("rect")
  .data(data)
  .enter()
  .append("rect")
  .attr("x", function(d) { return d.x; })
  .attr("y", function(d) { return d.y; })
  .attr("width", function(d) { return d.width; })
  .attr("height", function(d) { return d.height; })
  .style("fill", function(d) { return d.color; });

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### ASCIIFlow

ASCIIFlow 是一个用于创建文本表示数据流图的可视化库。它非常适合流程和算法的可视化。

**安装 ASCIIFlow**

composer require atifk/ascii-flow

**使用 ASCIIFlow 可视化算法**

fc7c290897f79b2a98c44e7b2bb8f0d9title('Sort Algorithm');
$diagram->addActor('Array', 'sort');
$diagram->addArrow($diagram ->end, 'left', 'compare');
$diagram->addArrow($diagram->start, 'down', 'swap');
?>

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