PDOStatement::fetchColumn
(PHP 5 >= 5.1.0, PHP 7, PHP 8, PECL pdo >= 0.9.0)
PDOStatement::fetchColumn —
Returns a single column from the next row of a result set
Description
public function PDOStatement::fetchColumn(
int $column = 0):
mixed
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-
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
from the next row of a result set or false if there are no more rows.
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
PDOStatement::fetchAll
PDOStatement