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Diffstat (limited to 'user_guide_src/source/database/call_function.rst')
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1 files changed, 39 insertions, 0 deletions
diff --git a/user_guide_src/source/database/call_function.rst b/user_guide_src/source/database/call_function.rst new file mode 100644 index 000000000..9890fc453 --- /dev/null +++ b/user_guide_src/source/database/call_function.rst @@ -0,0 +1,39 @@ +##################### +Custom Function Calls +##################### + +$this->db->call_function(); +============================ + +This function enables you to call PHP database functions that are not +natively included in CodeIgniter, in a platform independent manner. For +example, lets say you want to call the mysql_get_client_info() +function, which is **not** natively supported by CodeIgniter. You could +do so like this:: + + $this->db->call_function('get_client_info'); + +You must supply the name of the function, **without** the mysql\_ +prefix, in the first parameter. The prefix is added automatically based +on which database driver is currently being used. This permits you to +run the same function on different database platforms. Obviously not all +function calls are identical between platforms, so there are limits to +how useful this function can be in terms of portability. + +Any parameters needed by the function you are calling will be added to +the second parameter. + +:: + + $this->db->call_function('some_function', $param1, $param2, etc..); + +Often, you will either need to supply a database connection ID or a +database result ID. The connection ID can be accessed using:: + + $this->db->conn_id; + +The result ID can be accessed from within your result object, like this:: + + $query = $this->db->query("SOME QUERY"); + + $query->result_id;
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