Preg match with php PCRE error

PHP
1

Hey,

I need to preg match the string
“\r
\u003cstrong\u003e\r
(.*)u\003c”. I have tried making my own regex and ended up with

preg_match("/\\\\r\\\
 \\\\u003cstrong\\\\u003e\\\\r\\\
 (.*)u\\\\003c/iUs", $a, $b);

But I get the error

Compilation failed: PCRE does not support \\L, \\l, \\N, \\U, or \\u at offset 6

I have tried Googling it and playing about with it myself but to no avail. Any ideas anyone?

Thanks in advance

2

the pcre functions don’t support unicode, but there is no reason to use unicode in this case anyway - just replace those characters with the < and > signs. Also you are double escaping things that don’t need to be double escaped. try this:

preg_match("/\\r\
 <strong>\\r\
 (.*)</iUs", $a, $b);
3

try this instead

preg_match(“/\\r\
\\<u003cstrong>\\u003e\\r\
(.*)u\\003c/iUs”, $a, $b);

4

First reply gives me no error but also no data and the second reply gives me

Compilation failed: PCRE does not support \\L, \\l, \\N, \\U, or \\u at offset 20

I am going to try preg_replace the u003c and u003e out tomorrow though and see if I can match off that.

5

Actually I misunderstood - you need to triple escape, i.e.
\\\r\\\

Not
\\r\\

Etc

Hope that makes sense

6

looking at this again, I am really mucking up this thread :blush:. You actually need to quadruple escape, and escape all regex control characters:

preg_match("/\\\\\\\\r\\\\\\\
 \\\\\\\\u003cstrong\\\\\\\\u003e\\\\\\\\r\\\\\\\
 \\(\\.\\*\\)u\\\\\\\\003c/iUs", $str, $b)