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From: Ashley Sheridan on 1 Jun 2010 12:41 On Tue, 2010-06-01 at 17:32 +0100, Richard Quadling wrote: > On 1 June 2010 16:38, Ashley Sheridan <ash(a)ashleysheridan.co.uk> wrote: > > Ah, I ought to have guessed as it's you! ;) > > What are you insinuating? > > -- > ----- > Richard Quadling > "Standing on the shoulders of some very clever giants!" > EE : http://www.experts-exchange.com/M_248814.html > EE4Free : http://www.experts-exchange.com/becomeAnExpert.jsp > Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731 > ZOPA : http://uk.zopa.com/member/RQuadling > I've never known anyone to optimise code quite as much as you! That's not a bad thing though. Thanks, Ash http://www.ashleysheridan.co.uk
From: Peter on 2 Jun 2010 01:12 Hi Tanel, 1. only letters $str = 'helloworld'; if(preg_match("/^[a-zA-Z]*$/",$str)) echo "only letters"; else echo "failed"; 2. only letters and spaces $str = 'hello world'; if(preg_match("/^[a-zA-Z\s]*$/",$str)) echo "only letters and spaces"; else echo "failed"; Regards Peter.M Tanel Tammik wrote: > How to check with regular expression (preg) if string has: > > 1. only letters > 2. only letters and spaces > > Br > Tanel > > > >
From: Richard Quadling on 2 Jun 2010 04:22 On 2 June 2010 06:12, Peter <peters(a)egrabber.com> wrote: > Hi  Tanel, > > 1. only letters > > $str = 'helloworld'; > > if(preg_match("/^[a-zA-Z]*$/",$str)) > echo "only letters"; > else > echo "failed"; > > 2. only letters and spaces > > $str = 'hello world'; > > if(preg_match("/^[a-zA-Z\s]*$/",$str)) > echo "only letters and spaces"; > else > echo "failed"; > > > Regards > Peter.M Be careful with using *. The issue of a zero length string is important. * will allow a zero length string. ++ will force the regex to match something, so zero length strings are rejected. /s will match space, formfeed, newline, carriage return, horizontal tab, and vertical tab So a string with newlines (for example a <textarea> with line breaks) would match. -- ----- Richard Quadling "Standing on the shoulders of some very clever giants!" EE : http://www.experts-exchange.com/M_248814.html EE4Free : http://www.experts-exchange.com/becomeAnExpert.jsp Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731 ZOPA : http://uk.zopa.com/member/RQuadling
From: "Jan G.B." on 2 Jun 2010 11:35 2010/6/1 Peter Lind <peter.e.lind(a)gmail.com>: > On 1 June 2010 17:33, Ashley Sheridan <ash(a)ashleysheridan.co.uk> wrote: >> On Tue, 2010-06-01 at 16:31 +0100, Richard Quadling wrote: >> >>> $re1 = '/^[a-z]++$/i'; >>> $re2 = '/^[a-z ]++$/i'; >>> >>> >>> >>> -- >>> ----- >>> Richard Quadling >>> "Standing on the shoulders of some very clever giants!" >>> EE : http://www.experts-exchange.com/M_248814.html >>> EE4Free : http://www.experts-exchange.com/becomeAnExpert.jsp >>> Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731 >>> ZOPA : http://uk.zopa.com/member/RQuadling >>> >> >> >> Why the double ++ in the expressions there? Surely one + would match the >> 1 or more characters that you need and the second one would just be >> surplus? >> > > Equally important: why have three people already done this persons > homework. 5 minutes googling would have answered this ... > Even more important: No answer is correct, because f.e. "äüÃÄéâ" are also letters. Bye ;-)
From: Richard Quadling on 2 Jun 2010 11:50
On 2 June 2010 16:35, Jan G.B. <ro0ot.w00t(a)googlemail.com> wrote: > 2010/6/1 Peter Lind <peter.e.lind(a)gmail.com>: >> On 1 June 2010 17:33, Ashley Sheridan <ash(a)ashleysheridan.co.uk> wrote: >>> On Tue, 2010-06-01 at 16:31 +0100, Richard Quadling wrote: >>> >>>> $re1 = '/^[a-z]++$/i'; >>>> $re2 = '/^[a-z ]++$/i'; >>>> >>>> >>>> >>>> -- >>>> ----- >>>> Richard Quadling >>>> "Standing on the shoulders of some very clever giants!" >>>> EE : http://www.experts-exchange.com/M_248814.html >>>> EE4Free : http://www.experts-exchange.com/becomeAnExpert.jsp >>>> Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731 >>>> ZOPA : http://uk.zopa.com/member/RQuadling >>>> >>> >>> >>> Why the double ++ in the expressions there? Surely one + would match the >>> 1 or more characters that you need and the second one would just be >>> surplus? >>> >> >> Equally important: why have three people already done this persons >> homework. 5 minutes googling would have answered this ... >> > > Even more important: No answer is correct, because f.e. "äüÃÄéâ" are > also letters. > > Bye > > ;-) > So, would ... /^[^\p{M}\p{Z}\p{N}\p{P}\p{S}\p{C}\d\s]++$/i be ok? -- ----- Richard Quadling "Standing on the shoulders of some very clever giants!" EE : http://www.experts-exchange.com/M_248814.html EE4Free : http://www.experts-exchange.com/becomeAnExpert.jsp Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731 ZOPA : http://uk.zopa.com/member/RQuadling |