DOMElement::removeAttribute
(PHP 5, PHP 7)
DOMElement::removeAttribute — Removes attribute
Description
public DOMElement::removeAttribute ( string $name ) : bool
 Removes attribute named name from the element. 
Parameters
-  name
-  The name of the attribute. 
Return Values
 Returns true on success or false on failure. 
Errors/Exceptions
-  DOM_NO_MODIFICATION_ALLOWED_ERR
-  Raised if the node is readonly. 
See Also
- DOMElement::hasAttribute() - Checks to see if attribute exists
- DOMElement::getAttribute() - Returns value of attribute
- DOMElement::setAttribute() - Adds new attribute
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    https://www.php.net/manual/en/domelement.removeattribute.php