php man page for mysqli_field_count

MYSQLI_FIELD_COUNT(3)							 1						     MYSQLI_FIELD_COUNT(3)

mysqli::$field_count - Returns the number of columns for the most recent query

       Object oriented style

SYNOPSIS
       int$mysqli->field_count ()

DESCRIPTION
       Procedural style
       int mysqli_field_count (mysqli  $link)

	Returns  the number of columns for the most recent query on the connection represented by the $link parameter. This function can be useful
       when using the mysqli_store_result(3) function to determine if the query should have produced a non-empty result set or not without knowing
       the nature of the query.

PARAMETERS
	      o $
		link -Procedural style only: A link identifier returned by mysqli_connect(3) or mysqli_init(3)

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

EXAMPLES
       Example #1

	      $mysqli->field_count example

	      Object oriented style

	      <?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();
	      ?>

	      Procedural style

	      <?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);
	      ?>

PHP Documentation Group 												     MYSQLI_FIELD_COUNT(3)