I have a regex that I cannot get working right. I am using PCRE(php) to run it.
The regex looks for inch measurements written as fractions using the forward slash to separate the numerator and denominator. ex 1 3/8in or 19 15/16"
It would match 12 1/2" here:
A product description with 12 1/2" in it.
But I want it NOT to match if the measurement is part of a dimension, ie has an x before or after and matches this format: 19 3/4" x 19 5/8"
Example text that is matching incorrectly:
Product description with 19 3/4" x 19 5/8" in it.
This matches 5/8" when it is supposed to ignore all of it because of the x in there.
My regex currently knocks off the measure left of the x, but only ignores the whole number on the right side. The lookbehind will capture 5/8" from the example above. I need it to ignore both sides of the dimension and only match measurements that are by themselves. I am using negative look ahead and behind to match the x.
Regex:
/\s+(?<!x\s)\d*\s?\d+\/\d+"*\s*(in|")(?!\d*\s?x)\s*/i
I ran it through regex101.com's debugger and still can't figure it out. Thanks for reading.
with PCRE/php you could use (*SKIP)(*FAIL)
Demo