(PECL maxdb >= 1.0)
Returns the number of columns for the most recent query
int maxdb_field_count ( resource $link )
Procedural style
Object oriented style
int maxdb::field_count ( void )
Returns the number of columns for the most recent query on the connection represented by the link parameter. This function can be useful when using the maxdb_store_result() function to determine if the query should have produced a non-empty result set or not without knowing the nature of the query.
Returns:
An integer representing the number of fields in a result set.
Examples:
Object oriented style
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | <?php$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");maxdb_report (MAXDB_REPORT_OFF);$maxdb->query("DROP TABLE friends");maxdb_report (MAXDB_REPORT_ERROR);$maxdb->query( "CREATE TABLE friends (id int, name varchar(20))");$maxdb->query( "INSERT INTO friends VALUES (1,'Hartmut')");$maxdb->query( "INSERT INTO friends VALUES (2, 'Ulf')");if ($maxdb->field_count()) { /* this was a select/show or describe query */ $result = $maxdb->store_result(); /* process resultset */ $row = $result->fetch_row(); /* free resultset */ $result->close();}/* close connection */$maxdb->close();?> |
Procedural style
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | <?php$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");maxdb_report (MAXDB_REPORT_OFF);maxdb_query($link,"DROP TABLE friends");maxdb_report (MAXDB_REPORT_ERROR);maxdb_query($link, "CREATE TABLE friends (id int, name varchar(20))");maxdb_query($link, "INSERT INTO friends VALUES (1,'Hartmut')");maxdb_query($link, "INSERT INTO friends VALUES (2, 'Ulf')");if (maxdb_field_count($link)) { /* this was a select/show or describe query */ $result = maxdb_store_result($link); /* process resultset */ $row = maxdb_fetch_row($result); /* free resultset */ maxdb_free_result($result);}/* close connection */maxdb_close($link);?> |
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