Description:
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Hi,

Would it be possible to add secure password storage (mainly for database access) to PHP (when used as web server module) such that:
The passwords are per vhost.
The passwords can't be read by scripts themself in any way.
The passwords can only be read by the library (function) that actually uses them.
Multiple passwords can be stored. For example, a vhost could use five user/pass combinations to access five databases.

The advantage would be that passwords wouldn't be stored in normal PHP files (readable by scripts) anymore and that script configuration would be easier.

Reproduce code:
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