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I don't really think any testing is needed.
Doing the COUNT in the SQL query
Sends only one row of data back the to client (instead of every row)
Lets SQL do the count for you which is likely always going to be faster thenthan PHP.
Lets SQL do the count for you which is likely always going to be faster then PHP.
Lets SQL do the count for you which is likely always going to be faster than PHP.
