strict-api - Proposing a tool to check and enforce encapsulation

Hi, I have written a follow-up to my previous 'zstrict' PR. It is now focused on a simple mechanism to detect API violations : https://github.com/php/php-src/pull/1508 This version just implements the mechanism and applies it to the zend_string val/len/h elements. More details in the PR. Please comment first. Then, when we're OK on the feature, we may talk about the target version. Regards François --- L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast. https://www.avast.com/antivirus