Question

I am struggling to find a solution using preg_match_all to get from the following text only the value and the measurements untis , e.x. texts

MAN CAB HDMI TO HDMI M/M 18 cm SHIELDED 1.3V BLK 
MAN CAB HDMI TO HDMI M/M SHIELDED 1.3V BLK 18cm
MAN CAB HDMI TO HDMI M/M SHIELDED 1.3V BLK 5M
MAN CAB HDMI TO HDMI 5 M M/M SHIELDED 1.3V BLK 
MAN CAB HDMI TO HDMI M/M SHIELDED 1.3V BLK 5.0 m
MAN CAB HDMI TO HDMI M/M SHIELDED 1.3V BLK 5.2m
MAN CAB HDMI TO HDMI 5,2m M/M SHIELDED 1.3V BLK  
MAN CAB HDMI TO HDMI M/M 5,2 m SHIELDED 1.3V BLK 

would like to get as results

18 cm,18cm,5M,5 M,5.00 M,5.0 mm,5.2m and 5,2m

Answer 1

Something like this should work:

preg_match_all("/[0-9,.]+\s*(cm|m|mm)/mis", $string);

The mis flags make the regular expression case insensitive and allows matching over newlines.