How to replace $x<y$ with $x < y$

[fardina]

I am using cebe markdown in my website for writing mathematics.
If I use less than sign it causes some problems in rendering mathjax, see here: http://docs.mathjax.org/en/latest/tex.html#tex-and-latex-in-html-documents

How can I search all the text for less than sign like "x<y" and replace it by "x < y"?

Thank you for your help

[Carsten Brandt]

how is that question related to this library? do you have a parsing method that handles your math syntax?

[Alexander Makarov]

Do this right before passing your text to markdown library:

$text = preg_replace('~([a-z0-9]+)([<>=+-])([a-z0-9]+)~', '\1 \2 \3', $text);