mysqli_result::$field_count

mysqli_num_fields

(PHP 5, PHP 7, PHP 8)

mysqli_result::$field_count -- mysqli_num_fields — Gets the number of fields in the result set

Description

Object-oriented style

int $mysqli_result->field_count;

Procedural style

function mysqli_num_fields(mysqli_result $result): int

Returns the number of fields in the result set.

Parameters

result: Procedural style only: A mysqli_result object returned by mysqli_query(), mysqli_store_result(), mysqli_use_result() or mysqli_stmt_get_result().

Return Values

An int representing the number of fields.

Examples

Example #1 Object-oriented style

<?php

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

$result = $mysqli->query("SELECT Name, CountryCode, District, Population FROM City ORDER BY ID LIMIT 1");

/* Get the number of fields in the result set */
$field_cnt = $result->field_count;

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

Example #2 Procedural style

<?php

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$link = mysqli_connect("localhost", "my_user", "my_password", "world");

$result = mysqli_query($link, "SELECT Name, CountryCode, District, Population FROM City ORDER BY ID LIMIT 1");

/* Get the number of fields in the result set */
$field_cnt = mysqli_num_fields($result);

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

The above examples will output: