Answer 1. Zend Framework: It is an open source project fostered by the prominent PHP product and services provider Zend Technologies.
2. CakePHP Framework: It most closely corresponds to Rails, and indeed its developers readily mention that the project was originally inspired by the breakout framework. 
3. Solar Framework: An acronym for Simple Object Libray and Application Repository for PHP5, offers an extraordinary number of classes for facilitating rapid application development.
4. Symfony Framework: It is the brainchild of Fabien Potencier, founder of the French Web development firm Senso. 
:  html_entity_decode(): Passing null to parameter #1 ($string) of type string is deprecated in