(PHP 5)
ibase_blob_get — Get len bytes data from open blob
$blob_handle
   , int $len
   )
   This function returns at most len bytes from a BLOB
   that has been opened for reading by ibase_blob_open().
  
Note:
It is not possible to read from a BLOB that has been opened for writing by ibase_blob_create().
   Returns at most len bytes from the BLOB, or FALSE
   on failure.
  
Example #1 ibase_blob_get() example
<?php
$result    = ibase_query("SELECT blob_value FROM table");
$data      = ibase_fetch_object($result);
$blob_data = ibase_blob_info($data->BLOB_VALUE);
$blob_hndl = ibase_blob_open($data->BLOB_VALUE);
echo         ibase_blob_get($blob_hndl, $blob_data[0]);
?>