(PHP 4, PHP <=5.2.0)
ifx_error — Returns error code of last Informix call
Returns in a string one character describing the general results of a statement and both SQLSTATE and SQLCODE associated with the most recent SQL statement executed.
The link identifier.
The Informix error codes (SQLSTATE & SQLCODE) formatted as x [SQLSTATE = aa bbb SQLCODE=cccc].
where x = space : no error
E : error
N : no more data
W : warning
? : undefined
If the "x" character is anything other than space, SQLSTATE and SQLCODE describe the error in more detail.
See the Informix manual for the description of SQLSTATE and SQLCODE