sqlite_fetch_single

Description

sqlite_fetch_single() is identical to sqlite_fetch_array() except that it returns the value of the first column of the rowset.

This is the most optimal way to retrieve data when you are only interested in the values from a single column of data.

例子 1. A sqlite_fetch_single() example <?php if ($dbhandle = sqlite_open('mysqlitedb', 0666, $sqliteerror)) {     $sql = "SELECT id FROM sometable WHERE id = 42";     $res = sqlite_query($dbhandle, $sql);     if (sqlite_num_rows($res) > 0) {         echo sqlite_fetch_single($res); // 42     }          sqlite_close($dbhandle); } ?>

See also sqlite_fetch_array().