When one retrieves a database $link with mysql_connect(), how can one check if that link is still valid after some time? (I am not asking whether the returned is valid, I mean later)
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When one retrieves a database $link with mysql_connect(), how can one check if that link is still valid after some time? (I am not asking whether the returned is valid, I mean later)
You can use
mysql_ping()ormysqli_ping()for this. However, in a regular web application you should just execute your queries and abort with an error if a query failed (or retry once).