Xpath arguments in variable
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From: Sridhar Pandurangiah on 15 Sep 2010 04:57 Managed to resolve it. Phew! $v = $row->xpath('//membernumber[. = ' . '"' . $MemberId . '"' . ']'); works. Best regards Sridhar -------- Original Message -------- Subject: Re: [PHP] Re: Xpath arguments in variable From: ash(a)ashleysheridan.co.uk (Ashley Sheridan) To: Date: Wed Sep 15 2010 14:04:33 GMT+0530 (IST) > On Wed, 2010-09-15 at 14:03 +0530, Sridhar Pandurangiah wrote: > >> -------- Original Message -------- >> Subject: Re: Xpath arguments in variable >> From: php-general(a)garydjones.name (Gary) >> To: >> Date: Wed Sep 15 2010 13:34:11 GMT+0530 (IST) >> >> Whats wrong with >> $v = $row->xpath('//membernumber[. = ' . $MemberId . ']'); >> ? >> >> Am I not understanding what you are trying to ask? >> >> -------------------- >> >> I tried this but doesn't work. I guess the above statement is >> concatenating the entire string and the substitution isn't happening >> >> What I am trying to do is as follows >> $MemberId = 'A192'; >> $v = $row->xpath('//membernumber[. = ' . $MemberId . ']'); >> >> The $MemberId should be substituted with A192 and then the xpath query >> should be executed. The result should be that I locate the membernumber >> XML element that has the value A912. >> >> Best regards >> >> Sridhar >> >> >>> Sridhar Pandurangiah wrote: >>>> now I need to pass this value to XPath within a string variable say >>>> >>>> $v = $row->xpath('//membernumber[. = $MemberId]'); >>>> >>>> But this doesnt work due to the quotes. What I intend PHP to do is to >>>> substitute the value for $MemberId and then execute the XPath query. I >>>> have grappled with it for a few days before posting this. >>> Whats wrong with >>> $v = $row->xpath('//membernumber[. = ' . $MemberId . ']'); >>> ? >>> >>> Am I not understanding what you are trying to ask? >>> > > > Did you try using double quotes? > > Thanks, > Ash > http://www.ashleysheridan.co.uk > > >
From: Ashley Sheridan on 15 Sep 2010 05:07 On Wed, 2010-09-15 at 14:27 +0530, Sridhar Pandurangiah wrote: > Managed to resolve it. Phew! > > $v = $row->xpath('//membernumber[. = ' . '"' . $MemberId . '"' . ']'); > > works. > > Best regards > > Sridhar > > > -------- Original Message -------- > Subject: Re: [PHP] Re: Xpath arguments in variable > From: ash(a)ashleysheridan.co.uk (Ashley Sheridan) > To: > Date: Wed Sep 15 2010 14:04:33 GMT+0530 (IST) > > > On Wed, 2010-09-15 at 14:03 +0530, Sridhar Pandurangiah wrote: > > > >> -------- Original Message -------- > >> Subject: Re: Xpath arguments in variable > >> From: php-general(a)garydjones.name (Gary) > >> To: > >> Date: Wed Sep 15 2010 13:34:11 GMT+0530 (IST) > >> > >> Whats wrong with > >> $v = $row->xpath('//membernumber[. = ' . $MemberId . ']'); > >> ? > >> > >> Am I not understanding what you are trying to ask? > >> > >> -------------------- > >> > >> I tried this but doesn't work. I guess the above statement is > >> concatenating the entire string and the substitution isn't happening > >> > >> What I am trying to do is as follows > >> $MemberId = 'A192'; > >> $v = $row->xpath('//membernumber[. = ' . $MemberId . ']'); > >> > >> The $MemberId should be substituted with A192 and then the xpath query > >> should be executed. The result should be that I locate the membernumber > >> XML element that has the value A912. > >> > >> Best regards > >> > >> Sridhar > >> > >> > >>> Sridhar Pandurangiah wrote: > >>>> now I need to pass this value to XPath within a string variable say > >>>> > >>>> $v = $row->xpath('//membernumber[. = $MemberId]'); > >>>> > >>>> But this doesnt work due to the quotes. What I intend PHP to do is to > >>>> substitute the value for $MemberId and then execute the XPath query. I > >>>> have grappled with it for a few days before posting this. > >>> Whats wrong with > >>> $v = $row->xpath('//membernumber[. = ' . $MemberId . ']'); > >>> ? > >>> > >>> Am I not understanding what you are trying to ask? > >>> > > > > > > Did you try using double quotes? > > > > Thanks, > > Ash > > http://www.ashleysheridan.co.uk > > > > > > > Wouldn't $v = $row->xpath('//membernumber[. = "' . $MemberId . '"]'); be better? You're breaking the string into too many parts for now reason. Thanks, Ash http://www.ashleysheridan.co.uk
From: David Harkness on 15 Sep 2010 13:00 And let's not forget $v = $row->xpath("//membernumber[. = \"$MemberId\"]"); The \" inside the string turns into a double-quote and using " to delimit the string allows for variable substitution.
From: Pete Ford on 16 Sep 2010 04:20 On 15/09/10 18:00, David Harkness wrote: > And let's not forget > > $v = $row->xpath("//membernumber[. = \"$MemberId\"]"); > > The \" inside the string turns into a double-quote and using " to delimit > the string allows for variable substitution. > Oooh, I hate using backslashes - they always seem so untidy... I have a pathological fear of sed scripts, too. :( -- Peter Ford, Developer phone: 01580 893333 fax: 01580 893399 Justcroft International Ltd. www.justcroft.com Justcroft House, High Street, Staplehurst, Kent TN12 0AH United Kingdom Registered in England and Wales: 2297906 Registered office: Stag Gates House, 63/64 The Avenue, Southampton SO17 1XS
From: David Harkness on 16 Sep 2010 14:41 On Thu, Sep 16, 2010 at 1:20 AM, Pete Ford <pete(a)justcroft.com> wrote: > On 15/09/10 18:00, David Harkness wrote: > >> $v = $row->xpath("//membernumber[. = \"$MemberId\"]"); >> > > Oooh, I hate using backslashes - they always seem so untidy... > I have a pathological fear of sed scripts, too. :( And yet I find them the *most* tidy in a way: \" inserts an actual double-quote into the string. I don't think that's any more magical than "surround it with single-quotes so it doesn't terminate the string." It will work in single- and double-quoted strings equally, so you don't have to worry about switching from one to the other messing up the expression. David
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