Because the Slaters had 50k of Phil's money. Phil's argument was with Kat after Phil threatened her kids. Martin walked in, Phil turned on him and had him round the throat, Stacey walked in and hit Phil with a wrench.
To complicate matters, Ben left Phil there before covering Keanu's overalls with Phil's blood to try and frame him because Phil had changed his will in Lou and Keanu's favour. Then Ben tried to kill Phil in hospital and got into a fight with Jay which Phil kinda remembers...is it making sense now? :-)
Phil and Sharon are in Portugal at the moment because Mel said that if Sharon doesn't get her a villa there she'll tell Phil that the baby is Keanu's....
I'd carry on missing it if I were you...