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mysqli_result->field_count


(PHP 5)

mysqli_result->field_count -- mysqli_num_fieldsGet the number of fields in a result

Beschreibung

Object oriented style (property):

mysqli_result
int $field_count;

Procedural style:

int mysqli_num_fields ( mysqli_result $result )

Returns the number of fields from specified result set.

Parameter-Liste

result

Nur bei prozeduralem Aufruf: Ein von mysqli_query(), mysqli_store_result() oder mysqli_use_result() zurückgegebenes Ergebnisobjekt.

Rückgabewerte

The number of fields from a result set.

Beispiele

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$mysqli = new mysqli("localhost", "my_user", "my_password", "world"); /* check connection */ if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit(); } if ($result = $mysqli->query("SELECT * FROM City ORDER BY ID LIMIT 1")) { /* determine number of fields in result set */ $field_cnt = $result->field_count; printf("Result set has %d fields.\n", $field_cnt); /* close result set */ $result->close(); } /* close connection */ $mysqli->close();

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$link = mysqli_connect("localhost", "my_user", "my_password", "world"); /* check connection */ if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit(); } if ($result = mysqli_query($link, "SELECT * FROM City ORDER BY ID LIMIT 1")) { /* determine number of fields in result set */ $field_cnt = mysqli_num_fields($result); printf("Result set has %d fields.\n", $field_cnt); /* close result set */ mysqli_free_result($result); } /* close connection */ mysqli_close($link);

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

Result set has 5 fields.

Siehe auch