在PHP的SimpleXMLElement中，如何传递多个libXml选项？ [重复]

Question

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• What Does Using A Single Pipe '|' In A Function Argument Do? 2 answers

The answer to this is probably studpidly simple, but I can't for the life of me figure it out...

Per PHP's documentation, the 2nd parameter for the "SimpleXMLElement::__construct()" method, called "$option", is an integer, defined as: "Optionally used to specify additional Libxml parameters." Please note the plural of "parameters".

I get how to pass a single option, say:

$x = new SimpleXMLElement($feed_url, LIBXML_NOCDATA, TRUE);

But what if, in addition to "LIBXML_NOCDATA", I want to also pass "LIBXML_NOBLANKS", and/or "LIBXML_BIGLINES"? How do I pass those within the same call?

Example:

$x = new SimpleXMLElement($feed_url, LIBXML_NOCDATA LIBXML_NOBLANKS LIBXML_BIGLINES, TRUE);

(BTW, I know this doesn't work...)

What am I missing / not understanding?

Thanks!

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Answer 1

Use a bitwise OR to get the final value.

$x = new SimpleXMLElement($feed_url, LIBXML_NOCDATA | LIBXML_NOBLANKS | LIBXML_BIGLINES, TRUE);