PHILADELPHIA — It’s early, of course, but Mark Sanchez’s honeymoon period with the Eagles is in full swing.

The guy responsible for the Buttfumble who played his way out of New York?

To a man, that’s not the Sanchez his new teammates and coaches say they see as the much-maligned former Jets No. 1 pick prepares to make his starting debut for the Eagles here Monday night against Carolina.

The Sanchez they see instead is the one who enjoyed success early in his Jets career and looked comfortable in emergency duty last Sunday while leading first-place Philly to a 31-21 road victory in Houston.

“The Mark Sanchez I knew when he got here was the quarterback that led [the Jets] to two straight AFC championship games,” star wideout Jeremy Maclin said Wednesday. “He was a quarterback who won at this level as a very high draft pick and did very well with what he was given in New York.”

Sanchez certainly didn’t look like the bumbling 2011-12 version of himself last weekend against the Texans, taking over for the injured Nick Foles in the second quarter of a 7-7 game and completing 15 of 22 passes for 202 yards and two touchdowns.

Sanchez also was intercepted twice, but one of them was tipped and neither appears to be bothering the Eagles as they await his first NFL start since a 28-9 loss to the Bills on Dec. 30, 2012, in the Jets’ season finale.

Sanchez sounds humble and grateful for the fresh start here, even though this is one of the few NFL cities that can be as hostile and unforgiving to a struggling quarterback as New York.

The scars of his final three years with the Jets — including 2013, when he missed the entire season due to shoulder surgery — still seemed fresh for Sanchez on Wednesday.

“It’s been a while since I’ve started a game,” he said. “It’s hard going four straight years of playing, then being out for a year where you weren’t even able to practice and had to watch somebody else [Geno Smith] play. It tests you a little bit, makes you appreciate it even more and makes me want to play all that much better when I get in there.”

Sanchez still takes the high road when it comes to his career with the Jets, refusing to point any fingers or name any names, but his new teammates aren’t afraid to say Gang Green didn’t give him enough support.

“Mark can play, man,” Maclin said. “There’s no question about it. He’s also surrounded by a lot more talent than what he had in New York, so the sky’s the limit.”

Added Eagles Pro Bowl center Jason Kelce: “I wasn’t just going to take anybody’s word for it about what happened to Mark up there [with the Jets]. Somebody might not be fit in one place but be a perfect fit somewhere else, and he’s been a good fit here.”

Sanchez played so well at times against the Texans (his first snap ended in a 52-yard completion to Maclin) there is even speculation he could keep the job once the up-and-down Foles returns later this season from the collarbone injury.

While that might sound like some people getting way ahead of themselves after one game, especially knowing Sanchez’s track record, he does look like a good fit for Chip Kelly’s fast-break offense and can’t stop professing his love for it.

Sanchez is so enamored with the Eagles — and, seemingly, vice versa — that even his most infamous moment as a Jet is fair game.

“I could go tease Mark right now about the Buttfumble, and he’ll laugh about it,” Maclin said. “He’s fit right in.”