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PHP highlighter

PHP code highlighter.

https://travis-ci.com/kuria/php-highlighter.svg?branch=master
  • highlighting files or strings
  • highlighting specific line ranges
  • marking an active line
  • produces an ordered list (<ol>) with corresponding line numbers
  • PHP 7.1+
  • PhpHighlighter::file() - highlight a PHP file
  • PhpHighlighter::code() - highlight a string of PHP code
<?php

use Kuria\PhpHighlighter\PhpHighlighter;

$php = <<<'PHP'
<?php

echo "Hello world!";

PHP;

echo PhpHighlighter::code($php);

Output:

<ol>
<li><span style="color: #0000BB">&lt;?php</span></li>
<li></li>
<li><span style="color: #007700">echo&nbsp;</span><span style="color: #DD0000">"Hello&nbsp;world!"</span><span style="color: #007700">;</span></li>
<li></li>
</ol>

Note

In PHP 8.3, output of the highlight_file() and highlight_string() functions (which are used internally) has changed.

If you're using PHP 8.3 or newer, the output will contain regular spaces instead of &nbsp; entities. You can use white-space: pre; in your CSS to fix this.

An active line can be specified using the second argument.

The active line will have a class="active" attribute.

<?php

echo PhpHighlighter::code($php, 3);

A line range can be specified using the third argument.

Example line ranges:

  • NULL - highlight all lines
  • [20, 30] - highlight lines from 20 to 30 (absolute)
  • [-5, 5] - highlight 5 lines around the active line (requires active line)
  • [0, 0] - highlight the active line only (requires active line)
<?php

echo PhpHighlighter::code($php, 3, [-1, 1]);