(PHP 3 >= 3.0.3, PHP 4, PHP 5)
ifx_query -- Send Informix query
Description
int
ifx_query ( string query, int link_identifier [, int cursor_type [, mixed blobidarray]] )
Returns a positive Informix result identifier on success, or
FALSE on error.
A "result_id" resource used by other functions to retrieve the
query results. Sets "affected_rows" for retrieval by the
ifx_affected_rows() function.
ifx_query() sends a query to the currently
active database on the server that's associated with the
specified link identifier.
Executes query on connection
conn_id. For "select-type" queries a
cursor is declared and opened. The optional
cursor_type parameter allows you to make
this a "scroll" and/or "hold" cursor. It's a bitmask and can be
either IFX_SCROLL, IFX_HOLD, or both or'ed together. Non-select
queries are "execute immediate". IFX_SCROLL and IFX_HOLD are
symbolic constants and as such shouldn't be between quotes. I you
omit this parameter the cursor is a normal sequential cursor.
For either query type the number of (estimated or real) affected
rows is saved for retrieval by
ifx_affected_rows().
If you have BLOB (BYTE or TEXT) columns in an update query, you
can add a blobidarray parameter containing
the corresponding "blob ids", and you should replace those
columns with a "?" in the query text.
If the contents of the TEXT (or BYTE) column allow it, you can
also use "ifx_textasvarchar(1)" and "ifx_byteasvarchar(1)". This
allows you to treat TEXT (or BYTE) columns just as if they were
ordinary (but long) VARCHAR columns for select queries, and you
don't need to bother with blob id's.
With ifx_textasvarchar(0) or ifx_byteasvarchar(0) (the default
situation), select queries will return BLOB columns as blob id's
(integer value). You can get the value of the blob as a string
or file with the blob functions (see below).
Пример 1.
Show all rows of the "orders" table as a HTML table
<?php
ifx_textasvarchar(1); // use "text mode" for blobs
$res_id = ifx_query("select * from orders", $conn_id);
if (! $res_id) {
printf("Can't select orders : %s\n<br />%s<br />\n", ifx_error());
ifx_errormsg();
die;
}
ifx_htmltbl_result($res_id, "border=\"1\"");
ifx_free_result($res_id);
?>
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Пример 2. Insert some values into the "catalog" table
<?php
// create blob id's for a byte and text column
$textid = ifx_create_blob(0, 0, "Text column in memory");
$byteid = ifx_create_blob(1, 0, "Byte column in memory");
// store blob id's in a blobid array
$blobidarray[] = $textid;
$blobidarray[] = $byteid;
// launch query
$query = "insert into catalog (stock_num, manu_code, " .
"cat_descr,cat_picture) values(1,'HRO',?,?)";
$res_id = ifx_query($query, $conn_id, $blobidarray);
if (! $res_id) {
/* ... error ... */
}
// free result id
ifx_free_result($res_id);
?>
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See also ifx_connect().