Simple, works for general case (but fakable) - check HTTP_REFERER environment variable.

More complex, works for all - have script A send a signed request, and have script B only run if that request is valid. There are many ways to do this - the best will depend on the environment you're coding in. Eg, Mojolicious has built in signed cookies, for example.

In reply to Re: Redirect Script unless called from previous script by cLive ;-)
in thread Redirect Script unless called from previous script by Anonymous Monk

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