Can I launch an external program from a php script?

From: Date: Thu, 15 Feb 2001 02:10:00 +0000
Subject: Can I launch an external program from a php script?
Groups: php.general 
Request: Send a blank email to php-general+get-39793@lists.php.net to get a copy of this message
Hello, I have a situation where I need to verify the PGP signature of a message that is stored within a variable in a PHP script. Is it possible to launch external programs from within PHP? I can't find anything about it in the manual. If not, has anyone ported PGP over to PHP?? (That's a lot of Ps!) Thanks for your help! Wyatt

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