update : 2015.11.03
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Set result pointer to a specified field offset
mysqli_result
PHP Manual

mysqli_result::field_seek

mysqli_field_seek

(PHP 5)

mysqli_result::field_seek -- mysqli_field_seek — Set result pointer to a specified field offset

설명

객체 기반 형식

bool mysqli_result::field_seek ( int $fieldnr )

절차식 형식

bool mysqli_field_seek ( mysqli_result $result , int $fieldnr )

Sets the field cursor to the given offset. The next call to mysqli_fetch_field() will retrieve the field definition of the column associated with that offset.

Note:

To seek to the beginning of a row, pass an offset value of zero.

인수

result

순차 형식 전용: mysqli_query()나 mysqli_store_result()나 mysqli_use_result()가 반환한 결과셋 식별자.

fieldnr

The field number. This value must be in the range from 0 to number of fields - 1.

반환값

성공 시 TRUE를, 실패 시 FALSE를 반환합니다.

예제

Example #1 객체 기반 형식

<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

$query = "SELECT Name, SurfaceArea from Country ORDER BY Code LIMIT 5";

if ($result = $mysqli->query($query)) {

    /* Get field information for 2nd column */
    $result->field_seek(1);
    $finfo = $result->fetch_field();

    printf("Name:     %s\n", $finfo->name);
    printf("Table:    %s\n", $finfo->table);
    printf("max. Len: %d\n", $finfo->max_length);
    printf("Flags:    %d\n", $finfo->flags);
    printf("Type:     %d\n\n", $finfo->type);

    $result->close();
}

/* close connection */
$mysqli->close();
?>

Example #2 절차식 형식

<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");

/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

$query = "SELECT Name, SurfaceArea from Country ORDER BY Code LIMIT 5";

if ($result = mysqli_query($link, $query)) {

    /* Get field information for 2nd column */
    mysqli_field_seek($result, 1);
    $finfo = mysqli_fetch_field($result);

    printf("Name:     %s\n", $finfo->name);
    printf("Table:    %s\n", $finfo->table);
    printf("max. Len: %d\n", $finfo->max_length);
    printf("Flags:    %d\n", $finfo->flags);
    printf("Type:     %d\n\n", $finfo->type);

    mysqli_free_result($result);
}

/* close connection */
mysqli_close($link);
?>

위 예제들의 출력:

Name:     SurfaceArea
Table:    Country
max. Len: 10
Flags:    32769
Type:     4

참고

mysqli_result
PHP Manual