mysqli_result
PHP Manual

mysqli_result::field_seek

mysqli_field_seek

Set result pointer to a specified field offset

Description

Object-oriented style

public true mysqli_result::field_seek(int $index)

Procedural style

true mysqli_field_seek(mysqli_result $result, int $index)

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.

Parameters

result

Procedural style only: A mysqli_result object returned by mysqli_query, mysqli_store_result, mysqli_use_result or mysqli_stmt_get_result.

index

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

Return Values

Always returns true.

Changelog

Version Description
8.0.0 This function now always returns true. Previously it returned false on failure.

Examples

Example #1 Object-oriented style

<?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 Procedural style

<?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);
?>

The above examples will output:

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

See Also

  • mysqli_fetch_field