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Hi Larry, I recently came across an issue whereby array_merge would not accept the second argument, an array with a generated PHP variable name, without typecasting it. The array in question tested as an array with var_dump so I did not understand why the array_merge was failing saying that the second argument was not an array. But typecasting it as an array solved the issue. $destination_array = array_merge($destination_array, array(${"generated_array_name" . $suffix})); // works Posted in case it is of interest. PHP version 5.5.3 Cheers from Oz.