mysqli::$field_count

mysqli_field_count

Returns the number of columns for the most recent query

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`int` `mysqli->field_count`

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`int` `mysqli_field_count` `mysqli` `mysql`

Returns the number of columns for the most recent query on the connection represented by the `mysql` parameter. This function can be useful when using the `mysqli_store_result` function to determine if the query should have produced a non-empty result set or not without knowing the nature of the query.

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An integer representing the number of fields in a result set.

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### `$mysqli->field_count` example

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    <?php
    $mysqli = new mysqli("localhost", "my_user", "my_password", "test");

    $mysqli->query( "DROP TABLE IF EXISTS friends");
    $mysqli->query( "CREATE TABLE friends (id int, name varchar(20))");

    $mysqli->query( "INSERT INTO friends VALUES (1,'Hartmut'), (2, 'Ulf')");

    $mysqli->real_query("SELECT * FROM friends");

    if ($mysqli->field_count) {
        /* this was a select/show or describe query */
        $result = $mysqli->store_result();

        /* process resultset */
        $row = $result->fetch_row();

        /* free resultset */
        $result->close();
    }

    /* close connection */
    $mysqli->close();
    ?>

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    <?php
    $link = mysqli_connect("localhost", "my_user", "my_password", "test");

    mysqli_query($link, "DROP TABLE IF EXISTS friends");
    mysqli_query($link, "CREATE TABLE friends (id int, name varchar(20))");

    mysqli_query($link, "INSERT INTO friends VALUES (1,'Hartmut'), (2, 'Ulf')");

    mysqli_real_query($link, "SELECT * FROM friends");

    if (mysqli_field_count($link)) {
        /* this was a select/show or describe query */
        $result = mysqli_store_result($link);

        /* process resultset */
        $row = mysqli_fetch_row($result);

        /* free resultset */
        mysqli_free_result($result);
    }

    /* close connection */
    mysqli_close($link);
    ?>