Can the rowcount method of PHP pdo::statement return the function affected by the SELECT statement?

As shown in the following:

Reply content:

As shown in the following:

Affected refers to the number of rows that were changed, and the select query does not alter the contents of the row.

Http://php.net/pdo
In PDO, the number of rows that are queried by the select query is obtained by using count to calculate the array of result sets, and RowCount () stores the number of rows affected (changed) in the query (Insert/update/delete).

Http://php.net/mysqli
In Mysqli, num_rows (which is effective when buffering queries are turned on) stores the number of rows that select queries to, Affected_rows stores the number of rows affected (changed) in the query (Insert/update/delete).

It is important to note that if the update is the same as the original content, Mysqli's AFFECTED_ROWS,PDO rowcount () will return 0.

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