maxdb_field_count
maxdb->field_count
(PECL maxdb:1.0-7.6.00.38)
maxdb->field_count — Returns the number of columns for the most recent query
Description
Procedural style:
int maxdb_field_count
( resource $link
)
maxdb
int
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.
Return Values
An integer representing the number of fields in a result set.
Examples
Example #1 Object oriented style
<?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()) {
$result = $maxdb->store_result();
$row = $result->fetch_row();
$result->close();
}
$maxdb->close();
?>
Example #2 Procedural style
<?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)) {
$result = maxdb_store_result($link);
$row = maxdb_fetch_row($result);
maxdb_free_result($result);
}
maxdb_close($link);
?>
The above example produces no output.
maxdb_fetch
