Re: Regular Expressions

Don Don wrote: > Hi all, am trying to run a regular expression to a list of user entered data on some forms. > > I've creating what i think is a matching pattern for each category as shown below: > > function validateEntry($regularExpression, $fieldValue) > { > if(preg_match($regularExpression, $fieldValue)) > { > return "true"; > } > else > { > return "false"; > } > } > this function sucks - it does nothing more than wrap preg_match and returns strings instead of boolean values. regexp's become hard very quickly - but for simple checks like your doing your probably better off using the functions in the ctype extension: http://php.net/ctype > i made a list of rules that are passed into the function above > > 1) [a-zA-Z][0-9] //allow any characters and numbers together anywhere within the text > 2) [a-zA-Z] //allow only any charaters in the text > 3) [0-9]{2} //allow only digits and they must be 2 in length > 4) [a-zA-Z]{1} //allow only 1 character either uppercase or lowercase > > > but each of these fail the validation when data is entered appropriately , seems iam getting > something wrong. how exactly do you define these regexps? seems like your forgetting to add a start/end delimiting character to the regexp strings (as others have pointed out). > > > Fussy? Opinionated? Impossible to please? Perfect. Join Yahoo!'s user panel and > lay it on > us.http://us.rd.yahoo.com/evt=48516/*http://surveylink.yahoo.com/gmrs/yahoo_panel_invite.asp?a=7 > hot CTA = Join Yahoo!'s user panel