PHP Dokumentation: Function maxdb-num-fields
12. Januar 2010 von werner
maxdb_num_fields
result->field_count
(PECL maxdb >= 1.0)
maxdb_num_fields — result->field_count — Get the number of fields in a result
Beschreibung
Procedural style:
Object oriented style (property):
result
int $field_count;
maxdb_num_fields() returns the number of fields from specified result set.
Rückgabewerte
The number of fields from a result set
Beispiele
Beispiel #1 Object oriented style
<?php
$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}if (
$result = $maxdb->query("SELECT * FROM hotel.city ORDER BY zip")) {
/* 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 */
$maxdb->close();
?>Beispiel #2 Procedural style
<?php
$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}if (
$result = maxdb_query($link, "SELECT * FROM hotel.city ORDER BY zip")) {
/* determine number of fields in result set */
$field_cnt = maxdb_num_fields($result);
printf("Result set has %d fields.\n", $field_cnt);
/* close result set */
maxdb_free_result($result);
}/* close connection */
maxdb_close($link);
?>Das oben gezeigte Beispiel erzeugteine ähnliche Ausgabe wie:
Result set has 3 fields.
Siehe auch
- maxdb_fetch_field() – Returns the next field in the result set
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