Returns a single column from the next row of a result set

PDOStatement::fetchAll
PDOStatement::fetchObject
PDOStatement
PHP Manual

# PDOStatement::fetchColumn

(PHP 5 >= 5.1.0, PECL pdo >= 0.9.0)

PDOStatement::fetchColumn — Returns a single column from the next row of a result set

### Description

public mixed PDOStatement::fetchColumn ([ int `$column_number` = 0 ] )

Returns a single column from the next row of a result set or `FALSE` if there are no more rows.

> Note:

> PDOStatement::fetchColumn() should not be used to retrieve boolean columns, as it is impossible to distinguish a value of `FALSE` from there being no more rows to retrieve. Use PDOStatement::fetch() instead.

### Parameters

`column_number`

  0-indexed number of the column you wish to retrieve from the row. If no value is supplied, PDOStatement::fetchColumn() fetches the first column.

### Return Values

PDOStatement::fetchColumn() returns a single column in the next row of a result set.

Warning

There is no way to return another column from the same row if you use PDOStatement::fetchColumn() to retrieve data.

### Examples

Example #1 Return first column of the next row

`<?php
$sth = $dbh->prepare("SELECT name, colour FROM fruit");
$sth->execute();
print("Fetch the first column from the first row in the result set:\n");
$result = $sth->fetchColumn();
print("name = $result\n");
print("Fetch the second column from the second row in the result set:\n");
$result = $sth->fetchColumn(1);
print("colour = $result\n");
?>`

The above example will output:

    Fetch the first column from the first row in the result set:
    name = lemon
    Fetch the second column from the second row in the result set:
    colour = red

### See Also

- PDO::query() - Executes an SQL statement, returning a result set as a PDOStatement object
- PDOStatement::fetch() - Fetches the next row from a result set
- PDOStatement::fetchAll() - Returns an array containing all of the result set rows
- PDO::prepare() - Prepares a statement for execution and returns a statement object
- PDOStatement::setFetchMode() - Set the default fetch mode for this statement

PDOStatement::fetchAll
PDOStatement::fetchObject
PDOStatement
PHP Manual