[drupal-devel] testing for NULL or empty variables or array keys
nedjo at gworks.ca
Tue Sep 6 16:35:05 UTC 2005
I find I'm sometimes not sure which types of test I should apply to test if
a variable (or array key) is null or empty.
Looking at the code, I see various usages:
if ($variable == NULL)
if ($variable === NULL)
if (array_key_exists($key, $arrayname))
Can anyone point to or suggest a limited set of tests that we should use,
and guidelines for when each should be applied? This would be a useful
addition to the coding standards, http://drupal.org/node/318. Thanks!
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