PDOStatement::fetchColumn
(no version information, might be only in CVS)
PDOStatement::fetchColumn --
Returns a single column from the next row of a result set
Description
string
PDOStatement::fetchColumn ( [int column_number] )
Returns a single column from the next row of a result set.
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();
/* Fetch the first column from the next row in the result set */
print("Fetch the first column from the next row in the result set:\n");
$result = $sth->fetchColumn();
print("name = $result\n");
print("Fetch the second column from the next 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 next row in the result set:
name = lemon
Fetch the second column from the next row in the result set:
colour = red |
|
See Also
| PDO::query() |
| PDOStatement::fetch() |
| PDOStatement::fetchAll() |
| PDOStatement::prepare() |
| PDOStatement::setFetchMode() |