php man page for mysqli_num_fields

MYSQLI_NUM_FIELDS(3)							 1						      MYSQLI_NUM_FIELDS(3)

mysqli_result::$field_count - Get the number of fields in a result

       Object oriented style

SYNOPSIS
       int$mysqli_result->field_count ()

DESCRIPTION
       Procedural style
       int mysqli_num_fields (mysqli_result  $result)

	Returns the number of fields from specified result set.

PARAMETERS
	      o $
		result	 -Procedural   style   only:   A   result   set   identifier   returned   by  mysqli_query(3),	mysqli_store_result(3)	or
		mysqli_use_result(3).

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
", 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.
", $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
", 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.
", $field_cnt);

		  /* close result set */
		  mysqli_free_result($result);
	      }

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

	      The above examples will output:

	      Result set has 5 fields.

SEE ALSO
       mysqli_fetch_field(3).

PHP Documentation Group 												      MYSQLI_NUM_FIELDS(3)