PDOSTATEMENT.FETCH(3)							 1						     PDOSTATEMENT.FETCH(3)

PDOStatement::fetch - Fetches the next row from a result set

SYNOPSIS

       public mixed PDOStatement::fetch ([int  $fetch_style], [int  $cursor_orientation = PDO::FETCH_ORI_NEXT], [int  $cursor_offset])

DESCRIPTION

	Fetches a row from a result set associated with a PDOStatement object. The $fetch_style parameter determines how PDO returns the row.

PARAMETERS

	      o $fetch_style
		-  Controls  how  the next row will be returned to the caller. This value must be one of the PDO::FETCH_* constants, defaulting to
		value of PDO::ATTR_DEFAULT_FETCH_MODE (which defaults to PDO::FETCH_BOTH).

		     o PDO::FETCH_ASSOC: returns an array indexed by column name as returned in your result set

		     o PDO::FETCH_BOTH (default): returns an array indexed by both column name and 0-indexed column number  as	returned  in  your
		       result set

		     o PDO::FETCH_BOUND:  returns TRUE and assigns the values of the columns in your result set to the PHP variables to which they
		       were bound with the PDOStatement.bindColumn(3) method

		     o PDO::FETCH_CLASS: returns a new instance of the requested class, mapping the columns of the result set to named	properties
		       in  the	class. If $fetch_style includes PDO::FETCH_CLASSTYPE (e.g.  PDO::FETCH_CLASS | PDO::FETCH_CLASSTYPE) then the name
		       of the class is determined from a value of the first column.

		     o PDO::FETCH_INTO: updates an existing instance of the requested class, mapping the columns of the result set to named  prop-
		       erties in the class

		     o PDO::FETCH_LAZY: combines PDO::FETCH_BOTH and PDO::FETCH_OBJ, creating the object variable names as they are accessed

		     o PDO::FETCH_NAMED:  returns  an array with the same form as PDO::FETCH_ASSOC, except that if there are multiple columns with
		       the same name, the value referred to by that key will be an array of all the values in the row that had that column name

		     o PDO::FETCH_NUM: returns an array indexed by column number as returned in your result set, starting at column 0

		     o PDO::FETCH_OBJ: returns an anonymous object with property names that correspond to the column names returned in your result
		       set

	      o $cursor_orientation
		- For a PDOStatement object representing a scrollable cursor, this value determines which row will be returned to the caller. This
		value must be one of the PDO::FETCH_ORI_* constants, defaulting to PDO::FETCH_ORI_NEXT. To request a scrollable  cursor  for  your
		PDOStatement  object,  you  must  set the PDO::ATTR_CURSOR attribute to PDO::CURSOR_SCROLL when you prepare the SQL statement with
		PDO.prepare(3).

	      o $offset
		-  For	a  PDOStatement  object  representing  a  scrollable  cursor  for  which  the  cursor_orientation  parameter  is  set	to
		PDO::FETCH_ORI_ABS,  this value specifies the absolute number of the row in the result set that shall be fetched.  For a PDOState-
		ment object representing a scrollable cursor for which the cursor_orientation parameter is set to PDO::FETCH_ORI_REL,  this  value
		specifies the row to fetch relative to the cursor position before PDOStatement.fetch(3) was called.

RETURN VALUES

	The return value of this function on success depends on the fetch type. In all cases, FALSE is returned on failure.

EXAMPLES

       Example #1

	      Fetching rows using different fetch styles

	      <?php
	      $sth = $dbh->prepare("SELECT name, colour FROM fruit");
	      $sth->execute();

	      /* Exercise PDOStatement::fetch styles */
	      print("PDO::FETCH_ASSOC: ");
	      print("Return next row as an array indexed by column name
");
	      $result = $sth->fetch(PDO::FETCH_ASSOC);
	      print_r($result);
	      print("
");

	      print("PDO::FETCH_BOTH: ");
	      print("Return next row as an array indexed by both column name and number
");
	      $result = $sth->fetch(PDO::FETCH_BOTH);
	      print_r($result);
	      print("
");

	      print("PDO::FETCH_LAZY: ");
	      print("Return next row as an anonymous object with column names as properties
");
	      $result = $sth->fetch(PDO::FETCH_LAZY);
	      print_r($result);
	      print("
");

	      print("PDO::FETCH_OBJ: ");
	      print("Return next row as an anonymous object with column names as properties
");
	      $result = $sth->fetch(PDO::FETCH_OBJ);
	      print $result->name;
	      print("
");
	      ?>

	      The above example will output:

	      PDO::FETCH_ASSOC: Return next row as an array indexed by column name
	      Array
	      (
		  [name] => apple
		  [colour] => red
	      )

	      PDO::FETCH_BOTH: Return next row as an array indexed by both column name and number
	      Array
	      (
		  [name] => banana
		  [0] => banana
		  [colour] => yellow
		  [1] => yellow
	      )

	      PDO::FETCH_LAZY: Return next row as an anonymous object with column names as properties
	      PDORow Object
	      (
		  [name] => orange
		  [colour] => orange
	      )

	      PDO::FETCH_OBJ: Return next row as an anonymous object with column names as properties
	      kiwi

       Example #2

	      Fetching rows with a scrollable cursor

	      <?php
	      function readDataForwards($dbh) {
		$sql = 'SELECT hand, won, bet FROM mynumbers ORDER BY BET';
		try {
		  $stmt = $dbh->prepare($sql, array(PDO::ATTR_CURSOR => PDO::CURSOR_SCROLL));
		  $stmt->execute();
		  while ($row = $stmt->fetch(PDO::FETCH_NUM, PDO::FETCH_ORI_NEXT)) {
		    $data = $row[0] . "	" . $row[1] . "	" . $row[2] . "
";
		    print $data;
		  }
		  $stmt = null;
		}
		catch (PDOException $e) {
		  print $e->getMessage();
		}
	      }
	      function readDataBackwards($dbh) {
		$sql = 'SELECT hand, won, bet FROM mynumbers ORDER BY bet';
		try {
		  $stmt = $dbh->prepare($sql, array(PDO::ATTR_CURSOR => PDO::CURSOR_SCROLL));
		  $stmt->execute();
		  $row = $stmt->fetch(PDO::FETCH_NUM, PDO::FETCH_ORI_LAST);
		  do {
		    $data = $row[0] . "	" . $row[1] . "	" . $row[2] . "
";
		    print $data;
		  } while ($row = $stmt->fetch(PDO::FETCH_NUM, PDO::FETCH_ORI_PRIOR));
		  $stmt = null;
		}
		catch (PDOException $e) {
		  print $e->getMessage();
		}
	      }

	      print "Reading forwards:
";
	      readDataForwards($conn);

	      print "Reading backwards:
";
	      readDataBackwards($conn);
	      ?>

	      The above example will output:

	      Reading forwards:
	      21    10	  5
	      16    0	  5
	      19    20	  10

	      Reading backwards:
	      19    20	  10
	      16    0	  5
	      21    10	  5

SEE ALSO

       PDO.prepare(3),	PDOStatement.execute(3),  PDOStatement.fetchAll(3),  PDOStatement.fetchColumn(3),  PDOStatement.fetchObject(3),  PDOState-
       ment.setFetchMode(3).

PHP Documentation Group 												     PDOSTATEMENT.FETCH(3)