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
DOMText::isWhitespaceInElementContent
(PHP 5, PHP 7, PHP 8)
DOMText::isWhitespaceInElementContent — Indique si ce nœud de texte contient des espaces blancs
Description
Indique si un nœud de texte ne contient que des espaces ou est vide. Cette détermination est faite durant le chargement du document.
Liste de paramètres
Cette fonction ne contient aucun paramètre.
Valeurs de retour
Retourne true si le nœud contient zéro ou plusieurs caractères blancs
et rien d'autre. Retourne false sinon.
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User Contributed Notes 2 notes
permidion at yahoo dot com ¶
20 years ago
JITR ¶
17 years ago
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
