mysqli_result->field_count

mysqli_num_fields

(PHP 5)

mysqli_num_fields — Get the number of fields in a result

Description

Object oriented style (property):

mysqli_result

int$field_count;

Procedural style:

int mysqli_num_fields ( mysqli_result $result )

Returns the number of fields from specified result set.

Parameters

result: Procedural style only: A result set identifier returned by mysqli_query(), mysqli_store_result() or mysqli_use_result().

Return Values

The number of fields from a result set.

Examples

Example #1 Object oriented style


<?php

$mysqli = new mysqli("localhost", "my_user", "my_password", "world");



/* check connection */

if (mysqli_connect_errno()) {

    printf("Connect failed: %s\n", mysqli_connect_error());

    exit();

}



if ($result = $mysqli->query("SELECT * FROM City ORDER BY ID LIMIT 1")) {



    /* determine number of fields in result set */

    $field_cnt = $result->field_count;



    printf("Result set has %d fields.\n", $field_cnt);



    /* close result set */

    $result->close();

}



/* close connection */

$mysqli->close();

?>

Example #2 Procedural style


<?php

$link = mysqli_connect("localhost", "my_user", "my_password", "world");



/* check connection */

if (mysqli_connect_errno()) {

    printf("Connect failed: %s\n", mysqli_connect_error());

    exit();

}



if ($result = mysqli_query($link, "SELECT * FROM City ORDER BY ID LIMIT 1")) {



    /* determine number of fields in result set */

    $field_cnt = mysqli_num_fields($result);



    printf("Result set has %d fields.\n", $field_cnt);



    /* close result set */

    mysqli_free_result($result);

}



/* close connection */

mysqli_close($link);

?>

The above example will output:

Result set has 5 fields.