Re: expressions

In article <94t6hv$903$1@toye.p.sourceforge.net>, "Kumanan" <Kumanan@uni.de> wrote: if (eregi("[^0-9]{3}",$co_area)) { print("area code must be digits"); } or if (eregi("[^[:digit:]]{3}",$co_area)) if you use the POSIX regex fields. > hi, im trying to fix this couple of hours but i couldnt find the > mistake... can somebody look at it... > > first i want to check the $co_area for 3 digital ... it must contain 3 > digital > > if ($co_area != !ereg("([0-9]{3})",$co_area)) > { echo " * Area code must be 3 digital"; } > > > second... > > nickname check works but the first letter could be any number or any > letters.... > > with this code it accept only letters as first character....... i just > want any letter or numbers or - _ symboles from 3 to 12 characters... > > if ($nickname != !eregi("^[-\._\.0-9a-zA-Z]{3,12}$",$nickname)) > { > $error ="Nickname must be Alphanumeric[ a-z 0-9; - _ ; 3 - 12 > characters ]"; > $flak=1; > } > First mistake when using character classes in the pattern is that the hyphen must be at the end if it is to be included. Otherwise the hyphen is seen to be part of the range (0-9 or A-Z): so, ^[0-9a-zA-Z._-]{3,12} instead of what you have. You also should not need the trailing $. As in the first example, don't use the 'double negative' approach. use: if (eregi("^[^0-9a-zA-z._-]{3,12}",$nickname)) { echo "only alphanumeric buddy!"; } I didn't test this but it should be closer to success. Jeff > > i hope someone can help me to fix this... > > thanx > > kumanan kumanan@uni.de > > > > > >