Almost $60,000 has been raised for the family of a senior police officer who had part of his leg amputated after being struck by an alleged distracted driver.

In just 19 hours, 1003 generous people have contributed to raising $58,402 for the family of Jonathon Wright via fundraising page GoFundMe.

This figure quickly surpassed the $10,000 goal and is still climbing.

Officer Jonathon Wright was forced to have a 15cm amputation of his right foot. (GoFundMe)

The campaign was set up by a close friend of the family yesterday after Mr Wright was struck by a car while he was manning a Random Breath Test site in Leumeah in Sydney’s southwest on Friday night.

It is alleged the driver of the vehicle, Jakob Thornton, 22, was using a mobile phone and driving dangerously when he smashed into the site at 8.30pm.

Senior Constables Wright and Matthew Foley were squashed between the car and a police van, leaving Sen Const Wright with a 15 centimetre amputation of his right foot and Sen Const Foley with a fractured leg.

“He was just a bloke going to work, supporting his family and protecting his community,” a close friend wrote on the fundraising page.

“Lisa and Jono have a long and arduous road ahead of them.

“We all feel helpless and just want to support this beautiful family.”

Jakob Thornton, 22, has been charged with using a mobile phone and dangerous driving offences. (Supplied)

Thornton told police he spent 10 to 20 seconds looking down at his mobile and didn't see the flashing lights of patrol cars until he crashed into the officers who were setting up an RBT, a court has heard.

Court documents show the 22-year-old couldn't remember whether he applied the brakes when he ploughed into the officers at 60km/h on Campbelltown Road.

It's not Thornton’s first time being caught using a mobile phone while driving, with an incident two years ago leading to the suspension of his licence.

Thornton, whose provisional licence has been suspended four times, was denied bail when he appeared at Parramatta Bail Court. (Supplied)

Thornton, whose provisional licence has been suspended four times, was denied bail when he appeared at Parramatta Bail Court via video link yesterday charged with six driving offences.

Magistrate John Favretto said he was concerned about the accused's history of using a phone while driving and the risk he posed to the community.

"He was looking down at his phone for 10 to 20 seconds. That's not momentary. That's a few hundred metres," he said.

Police prosecutor Leesa McEvoy said the injured officers were wearing their full uniform standing next to flashing lights when they were hit.

"The facts are horrific," Ms McEvoy told the court.

"The strength of this prosecution case is nothing short of solid.

"There are no winners here."

The officers were hit while setting up an RBT in Leumeah, western Sydney. (9NEWS)

Mr Thornton was ordered to face Campbelltown Local Court on Wednesday for the next hearing.

Mr Foley's police colleagues have been credited with saving his life, with the application of a tourniquet proving crucial.

"One of the officers sustained a serious fracture and the other officer, who we are lucky to have not lost his life, has unfortunately had part of one of his legs amputated as a result of those injuries," NSW Police Force Commissioner Michael Fuller said after visiting the officers in hospital today.

"And whilst it's easy to say this is some sort of a tragedy, it is clearly not.

"This is the actions of a driver that could've taken the life of any community member but it is aggravated by the fact that two officers were out on a Friday night trying to protect the community from this type of driving behaviour."

Comm. Fuller praised the officer's colleagues and other first responders.

"Can I also acknowledge the officers at the scene that rendered first aid immediately. Officers applied a tourniquet to one of the senior constables with the most serious injury and probably saved his life," he said.

Assistant Commissioner Michael Corboy also praised the officers' colleagues earlier today.

"From the initial incident when it happened, with two officers suffered serious injuries, the work of police at the scene was critical in saving one of the officer's lives," he said.

Two officers were hit by a car at an RBT site. (9NEWS)

The other senior constable reportedly suffered multiple lower leg fractures, with police stating he is in good spirits in hospital.

Thornton has been charged with dangerous driving occasioning grievous bodily harm; two counts of driving in a dangerous manner dangerous; two counts of cause bodily harm by misconduct in charge of motor vehicle; negligent driving occasioning grievous bodily harm; and driver using a mobile phone when not permitted.

His licence has also been suspended.

A police critical incident team is investigating the crash, and their work will undergo independent review.