Read and write PHP config files with array or primitives data. Provide building blocks for a PHP native schema definition.

Leading and trailing spaces are ignored Opening and closing PHP tags are optional

<?php $conf['critical_value'] = 'Code before the header is not deleted on write and can act as a default for missing values in the actual config'; /* Some Config File Header*/ $conf['critical_value'] = 'Everything in here is overwritten on write'; $conf['auth']['transparent'] = true; $other_var = 'debug'; /* Some Config File Footer*/ $conf['critical_value'] = 'Code after the footer is not overwritten on write and can act as a temporary override to admin-provided config'; 

<?php $data = [ 'key' => 'value', 'key2' => [ 'nested => 'values', 'of_any' => ['possible' => 'format' ], ], ]; 

<?php $debug = true; $max_errors = 23; $initial_application_page = 'News'; ?> 

See Unit Tests

Applications have expectations with regards to PHP config files but free form PHP allows to undermine these expectations. The ConfigurationSchema classes provide building blocks for

• Rendering defaults into a new or incomplete configuration file
• generating UIs from Code without external schema languages like XML, Yaml, etc
• versioning and upgrading configuration files in a defined fashion.

Schema definitions always begin with a root element ConfigurationSchema. Every subsequent element is either a LeafElement or a ParentElement. LeafElements hold primitive values such as integer, string, float, boolean or null. A special type of leaf elements are void elements which do not emit anything to the configuration file but provide metadata for display in a UI assembled from the schema. ParentElements hold levels of array keys