Working With PHP
From the version 2.3 Sitecake started working with PHP files. If you are using Sitecake with a PHP website, there are several things to know:
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Complete sc-content element should be contained inside a single file. Opening sc-content element in one file and closing it in another would not work.
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PHP code inside sc-content element will be overwritten with rendered HTML after first save/publish
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Paths used in php include and require methods that contain editable content should be relative because Sitecake creates copies of your website files and works with copies. If used paths are full paths, Sitecake will always include original files. If you make changes to sc-content element that is located inside an included file, page refresh would not be enough to see the changes, you should have to publish the page to be able to see the changes.
On the other hand, if you want to include configuration file or file where you defined functions you use in your pages, you should use full path for inclusion. So, for example, if you want to include config file that is outside of your site root, you could use include_once($_SERVER['DOCUMENT_ROOT'] . '/../config.php);
Sitecake files and folders
Here is the short description of things found in sitecake/ folder.
sitecake/
2.3.1/ version folder
client/ editor
config/ configuration files
bootstrap.php application bootstrap
check.php environment check
config.php Sitecake configuration
locale/ translation .yml files
src/ server source files
Sitecake/ Sitecake classes
app.php services entry point
vendor/ third party libraries
credentials.php credentials file
credential.php.default reset credentials file
editor.cnf editor configuration
sitecake.php application entry point
Misc
Sitecake suports memcache, memcached and redis session handling.