PHP mysqli field_count() Function

Example - Object Oriented style

Assume we have a table named "Friends" (with 3 columns and 20 rows).

This example returns the number of columns for the most recent query:

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

if ($mysqli -> connect_errno) {
echo "Failed to connect to MySQL: " . $mysqli -> connect_error;
exit();
}

$mysqli -> query("SELECT * FROM Friends");
// Get number of columns - will return 3
$mysqli -> field_count();

$mysqli -> close();
?>

Look at example of procedural style at the bottom.

Definition and Usage

The field_count() / mysqli_field_count() function returns the number of columns for the most recent query.

Syntax

Object oriented style:

$mysqli -> field_count()

Procedural style:

mysqli_field_count( connection)

Parameter Values

Parameter	Description
connection	Required. Specifies the MySQL connection to use

Technical Details

Return Value:	Returns an integer that represents the number of columns in the result set
PHP Version:	5+

Example - Procedural style

Assume we have a table named "Friends" (with 3 columns and 20 rows).

This example returns the number of columns for the most recent query:

<?php
$con = mysqli_connect("localhost","my_user","my_password","my_db");

if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
exit();
}

mysqli_query($con, "SELECT * FROM Friends");
// Get number of columns - will return 3
mysqli_field_count($con);

mysqli_close($con);
?>

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