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The example in this article describes the attributes of xml tags for getting started with php operating xml. Share it with everyone for your reference. The specific analysis is as follows:
Note:
(1) Attribute values must be separated by single quotes or double quotes;
(2) An xml tag can have multiple attributes;
(3) Attribute values cannot contain <, > and & symbols; if they are to appear, use predefined entity references in xml. There are 5:
(4) The same attribute name cannot appear in the same tag: if there is already id="No001", there cannot be another id="No002".
(5) Comment method:
I hope this article will be helpful to everyone’s PHP XML programming design.