This is a small function we use on this site for code highlighting. It takes content and highlights anything between [ code ] and [ /code ] tags.
<?php
function highlight_code($content) {
$highlighted = preg_replace('/\[code\](.*?)[\/code\]/es',"'<div class=\"code\">'.highlight_string(html_entity_decode(str_replace('<br />','\n','\\1')),TRUE).'</div>'",$content);
return $highlighted;
}
?>
This is a short but dense piece of code, so I'll explain it step by step, from what it does first to what it does last. First off:
str_replace('<br />','\n','\\1')
This replaces all back returns with newlines in everything between the code tags. Without this the code would be one long line.
html_entity_decode(PREVIOUS_CODE)
This decodes all html entities so they will show up correctly after being highlighted.
highlight_string(PREVIOUS_CODE,TRUE)
This does the actual code highlighting. The TRUE as the second parameter sets the function to return the code.
$highlighted = preg_replace('/\[code\](.*?)\[\/code\]/es',"'<div class=\"code\">'.PREVIOUS_CODE.'</div>'",$content);
This is the hardest bit of code. It uses regular expressions to replace everything between code tags with the div. It also runs the previous functions on the section it is replacing. \\1 is a variable is the contents of the match (.*?). (.*?) matches any number of characters of any kind.
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<?php
function highlight_code($content) {
$highlighted = preg_replace('/[code](.*?)[/code]/es',"'<div class=\"code\">'.highlight_string(html_entity_decode(str_replace('<br />','n','\1')),TRUE).'</div>'",$content);
return $highlighted;
}
?>
He didn't even include
Coder is gay too.
the guest didn't even include "< ? PHP "
That shit is removed when I try to post.
Fuck you guys.
Manish Smells
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