mysqli_result::field_seek

(PHP 5, PHP 7)

Set result pointer to a specified field offset

bool mysqli_result::field_seek ( int $fieldnr )

Object oriented style

Procedural style

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.

Parameters:

result

Procedural style only: A result set identifier returned by mysqli_query(), mysqli_store_result() or mysqli_use_result().

fieldnr

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

Returns:

Returns TRUE on success or FALSE on failure.

Examples:

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();
?>

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