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 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.
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() - Prepares and executes an SQL statement without placeholders
- PDOStatement::fetch() - Fetches the next row from a result set
- PDOStatement::fetchAll() - Fetches the remaining rows from a result set
- PDO::prepare() - Prepares a statement for execution and returns a statement object
- PDOStatement::setFetchMode() - Set the default fetch mode for this statement
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https://www.php.net/manual/en/pdostatement.fetchcolumn.php