Fetches the next row from a result set

PDOStatement::execute
PDOStatement::fetchAll
PDOStatement
PHP Manual

# PDOStatement::fetch

(PHP 5 >= 5.1.0, PECL pdo >= 0.1.0)

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

### Description

public mixed PDOStatement::fetch ([ int `$fetch_style` [, int `$cursor_orientation` = PDO::FETCH_ORI_NEXT [, int `$cursor_offset` = 0 ]]] )

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

### Parameters

`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).

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

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

  - 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() method

  - 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.

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

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

  - 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

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

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

`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().

`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 PDOStatement 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() 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\n");
$result = $sth->fetch(PDO::FETCH_ASSOC);
print_r($result);
print("\n");
print("PDO::FETCH_BOTH: ");
print("Return next row as an array indexed by both column name and number\n");
$result = $sth->fetch(PDO::FETCH_BOTH);
print_r($result);
print("\n");
print("PDO::FETCH_LAZY: ");
print("Return next row as an anonymous object with column names as properties\n");
$result = $sth->fetch(PDO::FETCH_LAZY);
print_r($result);
print("\n");
print("PDO::FETCH_OBJ: ");
print("Return next row as an anonymous object with column names as properties\n");
$result = $sth->fetch(PDO::FETCH_OBJ);
print $result->NAME;
print("\n");
?>`

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] . "\t" . $row[1] . "\t" . $row[2] . "\n";
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] . "\t" . $row[1] . "\t" . $row[2] . "\n";
print $data;
} while ($row = $stmt->fetch(PDO::FETCH_NUM, PDO::FETCH_ORI_PRIOR));
$stmt = null;
}
catch (PDOException $e) {
print $e->getMessage();
}
}
print "Reading forwards:\n";
readDataForwards($conn);
print "Reading backwards:\n";
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() - Prepares a statement for execution and returns a statement object
- PDOStatement::execute() - Executes a prepared statement
- PDOStatement::fetchAll() - Returns an array containing all of the result set rows
- PDOStatement::fetchColumn() - Returns a single column from the next row of a result set
- PDOStatement::fetchObject() - Fetches the next row and returns it as an object.
- PDOStatement::setFetchMode() - Set the default fetch mode for this statement

PDOStatement::execute
PDOStatement::fetchAll
PDOStatement
PHP Manual