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ifx_prepare
Prepare an SQL-statement for execution
()
resource ifx_prepare ( string query, resource link_identifier [, int cursor_def, mixed blobidarray] )
Prepares a query for later use with ifx_do().
For "select-type" queries a cursor is declared and opened. Non-select queries are "execute immediate".
For either query type the number of (estimated or real) affected rows is saved for retrieval by ifx_affected_rows().
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).
Parameters
- query
The query string.
- link_identifier
The link identifier.
- cursor_def
This optional parameter allows you to make this a
scrolland/orholdcursor. It's a bitmask and can be eitherIFX_SCROLL,IFX_HOLD, or both or'ed together.- blobidarray
If you have BLOB (BYTE or TEXT) columns in the query, you can add a blobidarray parameter containing the corresponding "blob ids", and you should replace those columns with a "?" in the query text.
| ifx_do() |