searching non plain text files

From: Date: Sat, 15 Dec 2018 04:19:27 +0000
Subject: searching non plain text files
Groups: php.general 
Request: Send a blank email to php-general+get-326635@lists.php.net to get a copy of this message
Hello; Can anyone point me to instruction/advice about opening and reading files that are not plain text: word processing docs, pdf, ps, image files, even complied code. I am writing a search function to search file systems and don't know a lot about the formatting of non plain text files. The immediate concern is line breaks in word processing docs, pdf and ps files. Then detecting compiled code files so I can leave them alone. This type of file might not have a suffix to consider. Then the various image files that might be encountered. Even suffixes aren't a guarantee of the content. Thanks Jeff K.

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