DOMText::isWhitespaceInElementContent

(PHP 5)

DOMText::isWhitespaceInElementContent — このテキストノードが空白を含むかどうかを示す

説明

public bool DOMText::isWhitespaceInElementContent ( void )

このテキストノードが空白を含むかどうかを示します。このテキストノードが要素の内容に空白を含むかどうかは、ドキュメントの読み込み時に決定されます。

返り値

成功した場合に TRUE を、失敗した場合に FALSE を返します。

add a note User Contributed Notes DOMText::isWhitespaceInElementContent

JITR 07-Jul-2007 09:36


To add to `permidion at yahoo dot com''s comment:



Quite true. According to DOM Level 3 Core, the `isWhitespaceInElementContent()' method indicates, whether the node contains `whitespace in element content' (or `element content whitespace' according to the newer spec), see [1].



Btw, it seems the `isWhitespaceInElementContent()' method was replaced with the `isElementContentWhitespace' attribute in the current W3C recommendation, see [2].



I have the feeling, though, it would be more precise with the word `only' added, like: `... indicates, whether the node contains *only* element content whitespace.' This would better correspond with the fact the result is false, when there are any non-whitespace characters present (in addition to the whitespace ones), as already noted.



[1] (please concatenate the following two lines)

http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html

#core-Text3-isWhitespaceInElementContent

[2] (please concatenate the following two lines)

http://www.w3.org/TR/DOM-Level-3-Core/core.html

#Text3-isElementContentWhitespace

permidion at yahoo dot com 28-Oct-2004 02:30


if you have an xml element such as <name>Foo Bar</name> (note the space), isWhitespaceInElementContent will return false.

However it will return true for <name><name> or <name/>

so, that function can be used to determine if the element has a text content or not

add a note