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Requirements
In order to use the OpenSSL functions you need to install the » OpenSSL library. PHP 5 requires at least OpenSSL >= 0.9.6. However later PHP 5 versions have some compilation issues and should be used at least with OpenSSL >= 0.9.8 which is also a minimal version for PHP 7.0. Other versions (PHP >= 7.1.0) require OpenSSL >= 1.0.1.
You are strongly encouraged to use the most recent OpenSSL version, otherwise your web server could be vulnerable to attack.
English translation
You have asked to visit this site in English. For now, only the interface is translated, but not all the content yet.If you want to help me in translations, your contribution is welcome. All you need to do is register on the site, and send me a message asking me to add you to the group of translators, which will give you the opportunity to translate the pages you want. A link at the bottom of each translated page indicates that you are the translator, and has a link to your profile.
Thank you in advance.
Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-openssl.requirements.html
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References
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