Xpath arguments in variable
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From: Sridhar Pandurangiah on 15 Sep 2010 03:36 Hi I have the following statement that locates the node "membernumber" with the value A192. This works perfectly fine. $v = $row->xpath('//membernumber[. = "A192"]'); But 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. Any ideas are most welcome Best regards Sridhar
From: Ashley Sheridan on 15 Sep 2010 04:00 On Wed, 2010-09-15 at 13:06 +0530, Sridhar Pandurangiah wrote: > Hi > > I have the following statement that locates the node "membernumber" with > the value A192. This works perfectly fine. > > $v = $row->xpath('//membernumber[. = "A192"]'); > > But 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. Any ideas are > most welcome > > Best regards > > Sridhar > Use double quotes instead, which should allow PHP to expand the variables. Thanks, Ash http://www.ashleysheridan.co.uk
From: Sridhar Pandurangiah on 15 Sep 2010 04:33 -------- 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? >
From: Ashley Sheridan on 15 Sep 2010 04:34 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: Pete Ford on 15 Sep 2010 04:52 If you needed the double-quotes in the Xpath expression when the constant is used , then you probably need them in the variable version. $v = $row->xpath('//membernumber[. = "'.$MemberId.'"]'); That should put the double-quotes in for you... On 15/09/10 09:33, 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? >> -- 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
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