7:52 AM PT -- According to new legal docs -- obtained by TMZ -- Tyler's arrest capped off an alarming bender that possibly went on for weeks. Cops say they were contacted on Nov. 11 by an Uber driver who drove him home ... because Christopher had passed out in the back seat and urinated himself. He also allegedly had 2 fifths of bourbon on him ... one of which was halfway drank.
The docs say police have received 9 calls regarding Christopher being intoxicated since September 14, and medical personnel advised law enforcement there was nothing more they could do for him ... they'd already tried to help him.
For example -- Christopher was detained just days earlier on Nov. 8 for public intoxication at a Walgreens when someone reported he was trying to get inside their vehicle. Cops say Tyler was bleeding from the bridge of his nose and had urinated in his sweatpants ... and possibly hit his head.
Instead of being arrested, he was taken to the ER to be examined, but also took a breath test ... and registered a BAC of .267% -- more than 3 times the legal driving limit.
The docs say he got transported to a medical center for more treatment, and a warrant was filed for his arrest upon being released. Apparently, he checked himself out on Nov. 11 against medical advice ... before he was arrested for the Uber incident.
Tyler Christopher -- best known for his appearances on "General Hospital" over the course of 20 years -- may have had too much fun celebrating turning 47 ... because he ended up in jail.
The soap star was arrested in Martinsville, Indiana Monday night -- on his 47th birthday -- and booked for public intoxication. According to Morgan County Jail records ... he's being held on $225 cash and $1,000 bond.
As far as we can tell ... Tyler hasn't been released yet.
Based on his mug shot, Christopher's changed his look quite a bit since he left his role on another popular soap opera, "Days of Our Lives," earlier this year ... and not for the better.
Tyler played Stefan DiMera on 'Days' from December 2017 until leaving the series this past March. Before that, he played Nikolas Cassadine on 'GH' off and on from 1996 to 2016.
All that pales in comparison to the best fun fact about Tyler though -- he was married to Eva Longoria from 2002 to 2004.