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    RowResult::getColumnsCount

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    RowResult::getColumnsCount — Get column count

    说明

    public mysql_xdevapi\RowResult::getColumnsCount(): int

    Retrieve the column count for columns present in the result set.

    参数

    此函数没有参数。

    返回值

    The number of columns; 0 if there are none.

    更新日志

    版本 说明
    8.0.14 Method renamed from getColumnCount() to getColumnsCount().

    示例

    示例 #1 mysql_xdevapi\RowResult::getColumnsCount() example

    <?php
    $session     = mysql_xdevapi\getSession("mysqlx://user:password@localhost");

    $session->sql("DROP DATABASE addressbook")->execute();
    $session->sql("CREATE DATABASE foo")->execute();
    $session->sql("CREATE TABLE foo.test_table(x int)")->execute();
    $session->sql("INSERT INTO addressbook.names values ('John', 42), ('Sam', 33)")->execute();

    $sql = $session->sql("SELECT * from addressbook.names")->execute();

    echo     $sql->getColumnsCount();

    以上示例的输出类似于：

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