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    DOMText::isWhitespaceInElementContent

    (PHP 5, PHP 7, PHP 8)

    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 DOMText::isWhitespaceInElementContent(): bool

    このテキストノードが空白のみを含む（あるいは空である）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。

    パラメータ

    この関数にはパラメータはありません。

    戻り値

    ノードにゼロ個以上の空白文字だけが含まれる場合に true、 それ以外の場合に false を返します。

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    User Contributed Notes 2 notes

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    permidion at yahoo dot com
    20 years ago
    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
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    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
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