The 90-year-old 'Carry On' star experienced pain in his arm, while he was travelling home with wife Zara after a shopping trip, reported the Daily Mirror.
The actor was taken to the hospital, where his condition is said to be stable now but he is expected to spent at least a month.
"I'm too young to pop off just yet. I've got everything to live for," Phillips said.
Doctors have apparently praised the quick action of the actor's wife who immediately called an ambulance when her husband began experiencing pains.
"I'm 100 per cent hopeful of him making a full recovery and of being able to take him back home," said Zara, who got married to Phillips last year.