db2_fetch_both

    (PECL ibm_db2 >= 1.0.0)

    db2_fetch_both — Returns an array, indexed by both column name and position, representing a row in a result set

    Description

    db2_fetch_both(resource $stmt, int $row_number = -1): array|false

    Returns an array, indexed by both column name and position, representing a row in a result set. Note that the row returned by db2_fetch_both() requires more memory than the single-indexed arrays returned by db2_fetch_assoc() or db2_fetch_array().

    Parameters

    stmt

    A valid stmt resource containing a result set.

    row_number

    Requests a specific 1-indexed row from the result set. Passing this parameter results in a PHP warning if the result set uses a forward-only cursor.

    Return Values

    Returns an associative array with column values indexed by both the column name and 0-indexed column number. The array represents the next or requested row in the result set. Returns false if there are no rows left in the result set, or if the row requested by row_number does not exist in the result set.

    Examples

    Example #1 Iterating through a forward-only cursor

    If you call db2_fetch_both() without a specific row number, it automatically retrieves the next row in the result set. The following example accesses columns in the returned array by both column name and by numeric index.

    <?php

    $sql     = "SELECT id, name, breed, weight FROM animals ORDER BY breed";
    $stmt = db2_prepare($conn, $sql);
    $result = db2_execute($stmt);

    while (    $row = db2_fetch_both($stmt)) {
    printf ("%-5d %-16s %-32s %10s\n",
    $row['ID'], $row[0], $row['BREED'], $row[3]);
    }
    ?>

    The above example will output:

    0     Pook             cat                                    3.20
5     Rickety Ride     goat                                   9.70
2     Smarty           horse                                350.00

    Example #2 Retrieving specific rows with db2_fetch_both() from a scrollable cursor

    If your result set uses a scrollable cursor, you can call db2_fetch_both() with a specific row number. The following example retrieves every other row in the result set, starting with the second row.

    <?php

    $sql     = "SELECT id, name, breed, weight FROM animals ORDER BY breed";
    $result = db2_exec($stmt, $sql, array('cursor' => DB2_SCROLLABLE));

    $i=2;
    while (    $row = db2_fetch_both($result, $i)) {
    printf ("%-5d %-16s %-32s %10s\n",
    $row[0], $row['NAME'], $row[2], $row['WEIGHT']);
    $i = $i + 2;
    }
    ?>

    The above example will output:

    0     Pook             cat                                    3.20
5     Rickety Ride     goat                                   9.70
2     Smarty           horse                                350.00

    See Also

    • 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_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
    • db2_result() - Returns a single column from a row in the result set

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    User Contributed Notes 1 note

    up
    0
    eacosta at openware dot biz
    16 years ago
    Hello,

    Some weeks ago I faced difficulties with walk a big number of
    records from a result set.

    I was using the function db2_fetch_both in a method of a database adapter
    class to retrieve just one record at a time. The total number of records
    were: 5647 and when I reach record number 1600 the function crashed
    generating the below message in "Actual result" field.

    I am copying table's description next:

    TMP_TABLE
    -----------------------------------------------------------------
    | ID | TYPE | SIZE | NULL |
    -----------------------------------------------------------------
    | ID | INTEGER | 4 | NO |
    | SERVICE | VARCHAR | 30 | NO |
    | ID_v | VARCHAR | 30 | NO |
    | INFORMATION | CLOB | 65536 | YES |
    | EXP_LEVEL | INTEGER | 4 | NO |
    | IP4B | BIGINT | 8 | NO |
    | MODIFIED | INTEGER | 4 | YES |
    | DETAIL | VARCHAR | 200 | YES |
    | FALSPOS | INTEGER | 4 | YES |
    -----------------------------------------------------------------

    When it crashed I received this message from db2_fetch_both

    db2_fetch_array() [function.db2-fetch-array]: Fetch Failure

    After reported this message to IBM OpenDev I was helped by a OpenDev IBMer who noticed me
    that it wasn't a ibm_db2 module problem, in fact it was a database configuration
    issue. The OpenDev IBMer looked into my DB2 Client CLI TRACE files and found out what was happen.
    So I had to modify APP_CTL_HEAP_SZ and everything seems to works fine now.

    --
    Esteban Acosta Villafañe
    Area I+D
    http://www.openware.biz/opendev
    Linkein Profile: http://www.linkedin.com/in/estebanav
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