https://www.php.net/manual/uk/domtext.splittext.php
PHP: DOMText::splitText - Manual
Breaks this node into two nodes at the specified offset
phpsplittextmanual
https://www.php.net/manual/de/domtext.construct.php
PHP: DOMText::__construct - Manual
Creates a new DOMText object
phpconstructmanual
https://www.php.net/manual/it/domtext.splittext.php
PHP: DOMText::splitText - Manual
Breaks this node into two nodes at the specified offset
phpsplittextmanual
https://www.php.net/manual/zh/domtext.iswhitespaceinelementcontent.php
PHP: DOMText::isWhitespaceInElementContent - Manual
Indicates whether this text node contains whitespace
phpmanual