Cool Codes (Syntax Highlighter)

This is pretty much a MyBB 1.4/1.6 port of my Syntax Highlighter for MyBB 1.2.
I've also added line numbers to this one.

To resolve speed issues, you may be interested in my preparser cache plugin.

See the following thread for examples of what this looks like: http://mybbhacks.zingaburga.com/showthread.php?tid=33 (note, no code edits required for this version of the plugin)

[sledgeab]

Hi. My php version 7.1

But this error,

Type: 2
Folder: inc/highlighter.php (1006)
Error:
preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead

thanks.