Someone needs to tell the cops in the US that no one uses PCP anymore. That was the '70s. If you want to make up shit about someone being drug intoxicated and therefore dangerous, move on to meth or drugs people are actually using today.
That's not the perfect graph to illustrate this point, but the whole PCP as the go-to for drug intoxication is more Reefer Madness meta-language than an officer actually thinking someone was PCP intoxicated.
Hells, I worked in drug treatment for 7 years in the late 90s/early-oughts, and I can count on one hand the number of intakes I did where anyone had even done PCP. I blame those stupid after school specials on angel dust for this bullshit.