Object oriented style:
XMLWriter { bool setIndentString(string indentString);}
bool setIndentString(string indentString);
Procedural style:
Sets the string which will be used to indent each element/attribute of the resulting xml.
Only for procedural calls. The XMLWriter resource that is being modified. This resource comes from a call to xmlwriter_open_uri() or xmlwriter_open_memory().
The indentation string.
Returns TRUE on success or FALSE on failure.
TRUE
FALSE