#25838 [Bgs]: Dom_Node-child_nodes() is not live as the W3C DOM specification demands
ID: 25838 Updated by: [EMAIL PROTECTED] Reported By: Martin dot Honnen at arcor dot de Status: Bogus Bug Type: DOM XML related Operating System: Windows XP PHP Version: 4.3.3 New Comment: Just for your Information: Once we have implemented NodeLists in the new ext/dom for PHP5, this should work as expected by the W3C. Previous Comments: [2003-10-13 05:29:14] Martin dot Honnen at arcor dot de But the DOM specification says changes are automatically reflected in the NodeList, without further action on the user's part. If you have to call child_nodes() again and again to have it updated then changes are not automatically reflected in the NodeList. Compare a simple JavaScript program to be run in Mozilla: var xmlDocument = document.implementation.createDocument('', '', null); var rootElement = xmlDocument.createElement('gods'); xmlDocument.appendChild(rootElement); var childNodes = rootElement.childNodes; for (var i = 0; i 5; i++) { var god = xmlDocument.createElement('god'); god.setAttribute('name', 'god ' + i); rootElement.appendChild(god); alert(childNodes.length); } You will find that childNodes.length is incremented although childNodes is created outside of the loop. [2003-10-12 22:15:27] [EMAIL PROTECTED] It works fine when you actually set the $childNodes variable inside the for() loop. [2003-10-11 12:23:04] Martin dot Honnen at arcor dot de Description: The W3C DOM Level 2 specification at http://www.w3.org/TR/DOM-Level-2-Core/core.html#td-live says about NodeList collections that they should be live, meaning if a DOM user gets a NodeList object containing the children of an Element, then subsequently adds more children to that element (or removes children, or modifies them), those changes are automatically reflected in the NodeList, without further action on the user's part. However my test with PHP 4.3.3 and the following settings for DOMXML DOM/XML enabled DOM/XML API Version 20020815 libxml Version 20507 HTML Supportenabled XPath Support enabled XPointer Supportenabled DOM/XSLTenabled libxslt Version 1.0.30 libxslt compiled against libxml Version 2.5.7 shows that the result returned from Node-child_nodes() is not live but static. Reproduce code: --- ?php function dumpDoc ($xmlDocument) { echo ppre\n; echo htmlentities($xmlDocument-dump_mem(true)); echo /pre/p\n; } $xmlDocument = domxml_new_doc(1.0); $rootElement = $xmlDocument-create_element(gods); $xmlDocument-append_child($rootElement); $childNodes = $rootElement-child_nodes(); echo 'count($childNodes): ' . count($childNodes) . br\n; $xmlDocument-append_child($rootElement); for ($i = 0; $i 5; $i++) { $god = $xmlDocument-create_element(god); $god-set_attribute(name, god $i); $rootElement-append_child($god); dumpDoc($xmlDocument); echo 'count($childNodes): ' . count($childNodes) . br\n; } ? Expected result: I would expect count($childNodes) to be incremented every time $rootElement-append_child($god) is called. That is what the W3C DOM understands to be a live collection, and that is what happens with conformant DOM implementations (as the one in Mozilla or the one in SUN's Java SDK 1.4). Actual result: -- The output with dump_mem shows that child elements are added but the output of count($childNodes) is always 0. -- Edit this bug report at http://bugs.php.net/?id=25838edit=1
#25838 [Bgs]: Dom_Node-child_nodes() is not live as the W3C DOM specification demands
ID: 25838 User updated by: Martin dot Honnen at arcor dot de Reported By: Martin dot Honnen at arcor dot de Status: Bogus Bug Type: DOM XML related Operating System: Windows XP PHP Version: 4.3.3 New Comment: But the DOM specification says changes are automatically reflected in the NodeList, without further action on the user's part. If you have to call child_nodes() again and again to have it updated then changes are not automatically reflected in the NodeList. Compare a simple JavaScript program to be run in Mozilla: var xmlDocument = document.implementation.createDocument('', '', null); var rootElement = xmlDocument.createElement('gods'); xmlDocument.appendChild(rootElement); var childNodes = rootElement.childNodes; for (var i = 0; i 5; i++) { var god = xmlDocument.createElement('god'); god.setAttribute('name', 'god ' + i); rootElement.appendChild(god); alert(childNodes.length); } You will find that childNodes.length is incremented although childNodes is created outside of the loop. Previous Comments: [2003-10-12 22:15:27] [EMAIL PROTECTED] It works fine when you actually set the $childNodes variable inside the for() loop. [2003-10-11 12:23:04] Martin dot Honnen at arcor dot de Description: The W3C DOM Level 2 specification at http://www.w3.org/TR/DOM-Level-2-Core/core.html#td-live says about NodeList collections that they should be live, meaning if a DOM user gets a NodeList object containing the children of an Element, then subsequently adds more children to that element (or removes children, or modifies them), those changes are automatically reflected in the NodeList, without further action on the user's part. However my test with PHP 4.3.3 and the following settings for DOMXML DOM/XML enabled DOM/XML API Version 20020815 libxml Version 20507 HTML Supportenabled XPath Support enabled XPointer Supportenabled DOM/XSLTenabled libxslt Version 1.0.30 libxslt compiled against libxml Version 2.5.7 shows that the result returned from Node-child_nodes() is not live but static. Reproduce code: --- ?php function dumpDoc ($xmlDocument) { echo ppre\n; echo htmlentities($xmlDocument-dump_mem(true)); echo /pre/p\n; } $xmlDocument = domxml_new_doc(1.0); $rootElement = $xmlDocument-create_element(gods); $xmlDocument-append_child($rootElement); $childNodes = $rootElement-child_nodes(); echo 'count($childNodes): ' . count($childNodes) . br\n; $xmlDocument-append_child($rootElement); for ($i = 0; $i 5; $i++) { $god = $xmlDocument-create_element(god); $god-set_attribute(name, god $i); $rootElement-append_child($god); dumpDoc($xmlDocument); echo 'count($childNodes): ' . count($childNodes) . br\n; } ? Expected result: I would expect count($childNodes) to be incremented every time $rootElement-append_child($god) is called. That is what the W3C DOM understands to be a live collection, and that is what happens with conformant DOM implementations (as the one in Mozilla or the one in SUN's Java SDK 1.4). Actual result: -- The output with dump_mem shows that child elements are added but the output of count($childNodes) is always 0. -- Edit this bug report at http://bugs.php.net/?id=25838edit=1