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  • SQLite3::querySingle()

    (PHP 5 >= 5.3.0, PHP 7)

    Executes a query and returns a single result

    说明

    publicSQLite3::querySingle(string $query[,bool $entire_row= FALSE]): mixed

    Executes a query and returns a single result.

    参数

    $query

    The SQL query to execute.

    $entire_row

    By default,querySingle() returns the value of the first column returned by the query. If$entire_rowis TRUE, then it returns an array of the entire first row.

    返回值

    Returns the value of the first column of results or an array of the entire first row(if$entire_rowis TRUE).

    If the query is valid but no results are returned, then NULL will be returned if$entire_rowis FALSE, otherwise an empty array is returned.

    Invalid or failing queries will return FALSE.

    范例

    SQLite3::querySingle() example

    <?php
    $db = new SQLite3('mysqlitedb.db');
    var_dump($db->querySingle('SELECT username FROM user WHERE userid=1'));
    print_r($db->querySingle('SELECT username, email FROM user WHERE userid=1', true));
    ?>
    

    以上例程的输出类似于:

    string(5) "Scott"
    Array
    (
        [username] => Scott
        [email] => scott@example.com
    )