Preventing mysql deadlocks in your php application that uses SELECT… LOCK IN SHARE MODE?

In the MySQL documentation, the page 14.6. 8.1. InnoDB Lock Modes discusses (near the bottom of the page) a deadlock situation caused by the first client requesting a read lock with "LOCK IN SHARE MODE" and the second client requesting a write lock because of a delete. The second client is blocked by the first client's read lock, so its write lock is queued up. But when the first client then tries to do a delete, the following happens.

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