Discards a BLOB created with ibase_blob_create() . If you, for some reason, don't want to insert a BLOB you created into the database, you should discard it. All BLOBs created during your programs execution must be either closed and inserted into the database or discarded. Otherwise they continue to use internal resources in the database and you also risk losing data.
Note that you can't use this function to delete a BLOB already existing in the database. InterBase handles deleting existing BLOBs itself when you either delete the row containing a BLOB, set the BLOB column to NULL, or replace it with a new BLOB.
Available in PHP 3 since 3.0.7, PHP 4 since 4.0RC1
Input parameter blob will change its type to resource in the future.
// Adjust the ibase_connect() values for your environment $conn = ibase_connect("c:\\employees.gdb", 'SYSDBA', 'masterkey'); // Create, populate, and cancel the blob $blobby = ibase_blob_create($conn); ibase_blob_add($blobby, "Foo Bar Quux Baaz Kazaam!") || die("Couldn't add to blob on line " . __LINE__ . "\n"); ibase_blob_cancel($blobby);
PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.