(PHP 4, PHP <=5.2.0)
ifx_num_rows — Count the rows already fetched from a query
$result_id
)
Gives the number of rows fetched so far for a query with
result_id after a
ifx_query() or ifx_do()
query.
result_id
result_id is a valid resultid returned by
ifx_query() or
ifx_prepare() (select type queries only!).
Returns the number of fetched rows or FALSE on errors.
if you use this function following:
<?php
$query = ifx_query("SELECT * FROM systables", $connection);
$rows = ifx_num_rows($query);
?>
this way it doesn't work...
the correct is:
<?php
$query = ifx_query("SELECT * FROM systables", $connection);
$fetch = ifx_fetch_row($query);
$rows = ifx_num_rows($query);
?>
this way it work...
the informix doesn't returns anything (only with ifx_num_rows) if you don't open the results of query (with ifx_fetch_row)
This function give always 0 as result so I used ifx_affected_rows to count rows of a query's result...
An example of this function:
$conn_id = ifx_connect("db", "user", "password");
$res_id = ifx_query("select * from systables", $conn_id);
$res = ifx_affected_rows($res_id);
echo $res;
$res contains the number of rows in the result of the query after his execution.
Para Massimiliano
