docs: Correcting documentation mistakes in upgrading from one version to another #7191
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Description
Documentation problems
https://codeigniter.com/user_guide/installation/upgrade_405.html#message-getheader-s
In the line
Request[Interface]::getMethod(): The $upper parameter will be removed, use str_to_upper()
The correct PHP function is
strtoupper()
https://codeigniter.com/user_guide/installation/upgrade_412.html#baseconnection-query-return-values
In the line
Review any use of query() method and be assess whether the value might be boolean instead of Result object.
The word "be" does not belong in the sentence.
https://codeigniter.com/user_guide/installation/upgrade_431.html#config
Based on the description below it
app/Config/Encryption.php
should beapp/Config/Email.php
Checklist: