How to Write Perl Code in WordPress

Displaying Perl code in WordPress is similar to displaying any other programming language. You can’t run it since WordPress is a PHP based platform, but you can display it on the frontend. It’s about presenting the code in a readable and visually appealing way, not executing it. Here’s how to display Perl code in WordPress:

1. Use the Code Block

WordPress includes a ‘Code’ block for displaying code snippets.

  • While editing a post or page, click on the “+” button to add a new block.
  • Search for and select the ‘Code’ block.
  • Paste your Perl code into this block.

The ‘Code’ block will display your code in a monospace font, which is typical for code formatting.

2. Use a Syntax Highlighter Plugin

For enhanced presentation with syntax coloring, you can use a syntax highlighter plugin. Plugins like “SyntaxHighlighter Evolved” or “Crayon Syntax Highlighter” are popular choices.

  • Install the plugin via the WordPress admin panel by going to Plugins > Add New and searching for the syntax highlighter plugin.
  • Once installed and activated, the plugin will add a new block type or a shortcode you can use.
  • Use the plugin’s shortcode or block to insert your Perl code. Here’s an example using a shortcode:
# Your Perl code here
use strict;
use warnings;

print "Hello, World!\n";

3. Embed a Gist

GitHub Gist is another way to share and display code snippets. You can embed a Gist in your WordPress post:

  • Create a Gist at with your Perl code.
  • Copy the URL of the Gist.
  • Paste the URL directly into your WordPress post editor. WordPress will automatically turn it into an embedded Gist.

4. Custom CSS

If you prefer not to use plugins, you can add custom CSS to your theme for code formatting:

  • Go to Appearance > Customize > Additional CSS.
  • Add custom CSS rules for styling HTML <pre> or <code> tags.

Example CSS:

pre.perl-code {
background-color: #f7f7f7;
border: 1px solid #ddd;
overflow: auto;
padding: 10px;
font-family: 'Courier New', monospace;

Then, you can wrap your Perl code in <pre class="perl-code">...</pre> tags within your post.

Important Notes

  • Always preview your post to ensure the code is displayed correctly.
  • Changing themes or plugins can affect how your code is displayed.
  • The code you add to your posts is for display purposes only and will not be executed by the server.
  • Properly escape your code if not using a block or shortcode to prevent WordPress or browsers from rendering it as HTML.

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