fbsql_query
Send a FrontBase query
Description
resource fbsql_query
( string $query
[, resource $link_identifier
[, int $batch_size
]] )
If the query succeeds, you can call fbsql_num_rows to
find out how many rows were returned for a SELECT statement or
fbsql_affected_rows to find out how many rows were
affected by a DELETE, INSERT, REPLACE, or UPDATE statement.
Parameters
-
query
-
The SQL query to be executed.
Note:
The query string shall always end with a semicolon.
-
link_identifier
-
A FrontBase link identifier
returned by fbsql_connect or
fbsql_pconnect.
If optional and not specified,
the function will try to find an open link to the FrontBase server and if no
such link is found it will try to create one as if
fbsql_connect was called with no arguments.
-
batch_size
-
Return Values
fbsql_query returns TRUE (non-zero) or FALSE
to indicate whether or not the query succeeded. A return value
of TRUE means that the query was legal and could be executed by
the server. It does not indicate anything about the number of
rows affected or returned. It is perfectly possible for a query
to succeed but affect no rows or return no rows.
For SELECT statements, fbsql_query returns a new
result identifier that you can pass to fbsql_result.
fbsql_query will also fail and return FALSE if you
don't have permission to access the table(s) referenced by the query.
Examples
The following query is syntactically invalid, so
fbsql_query fails and returns FALSE:
Example #1 fbsql_query example
<?php
$result = fbsql_query("SELECT * WHERE 1=1")
or die ("Invalid query");
?>
The following query is semantically invalid if
my_col is not a column in the table
my_tbl, so fbsql_query
fails and returns FALSE:
Example #2 fbsql_query example
<?php
$result = fbsql_query ("SELECT my_col FROM my_tbl;")
or die ("Invalid query");
?>
See Also
- fbsql_affected_rows
- fbsql_db_query
- fbsql_free_result
- fbsql_result
- fbsql_select_db
- fbsql_connect