db2_result

(PECL ibm_db2 >= 1.0.0)

db2_result — Returns a single column from a row in the result set

Descrizione

db2_result(resource $stmt, int|string $column): ?mixed

Use db2_result() to return the value of a specified column in the current row of a result set. You must call db2_fetch_row() before calling db2_result() to set the location of the result set pointer.

Elenco dei parametri

stmt: A valid stmt resource.
column: Either an integer mapping to the 0-indexed field in the result set, or a string matching the name of the column.

Valori restituiti

Returns the value of the requested field if the field exists in the result set. Returns null if the field does not exist, and issues a warning.

Esempi

Example #1 A db2_result() example

The following example demonstrates how to iterate through a result set with db2_fetch_row() and retrieve columns from the result set with db2_result().

<?php
$sql = 'SELECT name, breed FROM animals WHERE weight < ?';
$stmt = db2_prepare($conn, $sql);
db2_execute($stmt, array(10));
while (db2_fetch_row($stmt)) {
    $name = db2_result($stmt, 0);
    $breed = db2_result($stmt, 'BREED');
    print "$name $breed";
}
?>

Il precedente esempio visualizzerà:

cat Pook
gold fish Bubbles
budgerigar Gizmo
goat Rickety Ride

Vedere anche:

db2_fetch_array() - Returns an array, indexed by column position, representing a row in a result set
db2_fetch_assoc() - Returns an array, indexed by column name, representing a row in a result set
db2_fetch_both() - Returns an array, indexed by both column name and position, representing a row in a result set
db2_fetch_object() - Returns an object with properties representing columns in the fetched row
db2_fetch_row() - Sets the result set pointer to the next row or requested row

add a note

User Contributed Notes 1 note

down

jay+nospam at toxicedge dot com ¶

9 years ago


It's worth noting that this function consumes the value (the first call will return a result, and any subsequent calls will return NULL).

add a note