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PDOStatement::fetchColumn

PHP function Edit on GitHub ✎

(PHP 5 >= 5.1.0, PHP 7, PHP 8, PECL pdo >= 0.9.0)

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

Description

PDOStatement::fetchColumn(int $column = 0): mixed

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: 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.

Errors/Exceptions Errors

Examples

Return first column of the next row

php

<?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:

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