Natural Language Processing in PHP

To do it 'properly', you need to define some sort of grammar, and then maybe use a LALR parser or some tools such as yacc, bison or Lex to build a parser. Assuming you dont want to do that, its strpos() ftw!

There is openNlp in java for name entity extraction which can fetch you what you are looking see this : http://opennlp.sourceforge.net/models-1.5/

Then you can use php-java connector to get results into php.