PHP Dokumentation: Mysqli-result current-field
12. Januar 2010 von werner
mysqli_result->current_field
mysqli_field_tell
(PHP 5)
mysqli_result->current_field — mysqli_field_tell — Get current field offset of a result pointer
Beschreibung
Object oriented style (property):
int $current_field ;
Procedural style:
int mysqli_field_tell ( mysqli_result $result )
Returns the position of the field cursor used for the last mysqli_fetch_field() call. This value can be used as an argument to mysqli_field_seek().
Parameter-Liste
- result
Nur bei prozeduralem Aufruf: Ein vonmysqli_query(), mysqli_store_result()oder mysqli_use_result() zurückgegebenesErgebnisobjekt.
Rückgabewerte
Returns current offset of field cursor.
Beispiele
Beispiel #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 all columns */
while ($finfo = $result->fetch_field()) {
/* get fieldpointer offset */
$currentfield = $result->current_field;
printf("Column %d:\n", $currentfield);
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();
?>Beispiel #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, $query)) {
/* Get field information for all fields */
while ($finfo = mysqli_fetch_field($result)) {
/* get fieldpointer offset */
$currentfield = mysqli_field_tell($result);
printf("Column %d:\n", $currentfield);
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);
?>Das oben gezeigte Beispiel erzeugt folgendeAusgabe:
Column 1:Name: NameTable: Countrymax. Len: 11Flags: 1Type: 254Column 2:Name: SurfaceAreaTable: Countrymax. Len: 10Flags: 32769Type: 4
Siehe auch
- mysqli_fetch_field() – Returns the next field in the result set
- mysqli_field_seek() – Set result pointer to a specified field offset
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