Question

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How to check if mysql returns null/empty

I have SQL command (LEFT JOIN between 2 tables) with result ‘NULL’ or ‘0’. And now I want to create PHP condition like this :

if ($rowSearch['Approved'] == NULL)

but it failed… then I tried this one

if ($rowSearch['Approved'] == 'NULL')

also failed… PHP always skip that statement. how to write PHP IF statement for this? thanks before.

Answer 1

If you need to distinguish between NULL, "", False, and 0, then you need to use a strict comparison ===. Or you can use is_null(). The table on this page may be relevant.