mysqli_num_fields(3) [php man page]

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)

MYSQLI_FIELD_TELL(3)							 1						      MYSQLI_FIELD_TELL(3)

mysqli_result::$current_field - Get current field offset of a result pointer

       Object oriented style

SYNOPSIS

       int$mysqli_result->current_field ()

DESCRIPTION

       Procedural style
       int mysqli_field_tell (mysqli_result  $result)

	Returns  the  position	of  the  field	cursor	used  for  the	last  mysqli_fetch_field(3) call. This value can be used as an argument to
       mysqli_field_seek(3).

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

	Returns current offset of field cursor.

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();
	      }

	      $query = "SELECT Name, SurfaceArea from Country ORDER BY Code LIMIT 5";

	      if ($result = $mysqli->query($query)) {

		  /* Get field information for all columns */
		  while ($finfo = $result->fetch_field()) {

		      /* get fieldpointer offset */
		      $currentfield = $result->current_field;

		      printf("Column %d:
", $currentfield);
		      printf("Name:	%s
", $finfo->name);
		      printf("Table:	%s
", $finfo->table);
		      printf("max. Len: %d
", $finfo->max_length);
		      printf("Flags:	%d
", $finfo->flags);
		      printf("Type:	%d

", $finfo->type);
		  }
		  $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();
	      }

	      $query = "SELECT Name, SurfaceArea from Country ORDER BY Code LIMIT 5";

	      if ($result = mysqli_query($link, $query)) {

		  /* Get field information for all fields */
		  while ($finfo = mysqli_fetch_field($result)) {

		      /* get fieldpointer offset */
		      $currentfield = mysqli_field_tell($result);

		      printf("Column %d:
", $currentfield);
		      printf("Name:	%s
", $finfo->name);
		      printf("Table:	%s
", $finfo->table);
		      printf("max. Len: %d
", $finfo->max_length);
		      printf("Flags:	%d
", $finfo->flags);
		      printf("Type:	%d

", $finfo->type);
		  }
		  mysqli_free_result($result);
	      }

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

	      The above examples will output:

	      Column 1:
	      Name:	Name
	      Table:	Country
	      max. Len: 11
	      Flags:	1
	      Type:	254

	      Column 2:
	      Name:	SurfaceArea
	      Table:	Country
	      max. Len: 10
	      Flags:	32769
	      Type:	4

SEE ALSO

       mysqli_fetch_field(3), mysqli_field_seek(3).

PHP Documentation Group 												      MYSQLI_FIELD_TELL(3)