cannot generate system identifier for general entity &var1

Jeg har en side, jeg loader med to forskellige get-variabler. Disse skille jeg ad med tegnet &.

Når jeg så prøver at XHTML 1.0-validere min side på w3c.org, melder den følgende fejl:

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An entity reference was found in the document, but there is no reference by that name defined. Often this is caused by misspelling the reference name, unencoded ampersands, or by leaving off the trailing semicolon (;). The most common cause of this error is unencoded ampersands in URLs as described by the WDG in "Ampersands in URLs".

Entity references start with an ampersand (&) and end with a semicolon (;). If you want to use a literal ampersand in your document you must encode it as "&" (even inside URLs!). Be careful to end entity references with a semicolon or your entity reference may get interpreted in connection with the following text. Also keep in mind that named entity references are case-sensitive; &Aelig; and æ are different characters.

If this error appears in some markup generated by PHP's session handling code, this article has explanations and solutions to your problem.

Note that in most documents, errors related to entity references will trigger up to 5 separate messages from the Validator. Usually these will all disappear when the original problem is fixed.

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Den linie der giver fejlen har denne syntaks:

minside.aspx?var1=value1&var2=value2

Det der giver problemer er &var2, som opfattese som en "ampersand". Hvordan skiller jeg lige mine variabler på en gyldig måde i forb. med xhtml 1.0?

På forhånd tak.