mysql fetch assoc VS mysql fetch array

Question

Below are two methods commonly used in most php codes for fetch mysql data .

1. mysql_fetch_array()
2. mysql_fetch_assoc()
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Answer 1

Well http://php.net/manual/en/function.mysql-fetch-assoc.php states

Note: Performance

An important thing to note is that using mysql_fetch_assoc() is not significantly slower than using mysql_fetch_row(), while it provides a significant added value.

So the difference shouldn't be something to worry about.