Checking reciprocal links with php

reciprocal links

[donkeyalamo]

I want to add a reciprocal link section to my site, and am having trouble figuring out how to check another website for a link to mine.

Any suggestions would be greatly appreciated.
Thanks

[dcrombie]

Here's a start:

file_get_contents [php.net]
preg_match [php.net]

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