[Semediawiki-user] [ED] error side-effect with clear_external_data

[Heinz K. <hk_...@we...>]

Hello,

I changed my WM-tablets, where I used a fieldname iterator to avoid 
problems which should be solved with clear_external_data.
But I got error messages like
array_key_exists() expects parameter 2 to be array, null given in 
/....../ExternalData/ED_ParserFunctions.php on line 288

My guessing was, that my template tries to use an empty DB-lookup-result,

so instead
if ( array_key_exists( $variable, $edgValues ) ) {

I set
if ( is_array($edgValues) && array_key_exists( $variable, $edgValues ) ) {


But then I got the same error on line 264, where I followed the same 
strategy and set:
if ( ! is_array($edgValues) || ! array_key_exists( $local_var, 
$edgValues ) )

instead of
if ( ! array_key_exists( $local_var, $edgValues ) )

This solves my problems but of course is just guessing.

Regards
HK