Inserting large text into blob - php

Question

I've been trying to find a solution to this problem for a long time now and nowhere on the internet was I able to find the answer. I have this situation where i need to insert or update a blob field (subtype 1) from a firebird database with php. The problem is that when the text get like really big >36k it will not execute the query. I know line queries are limited to 32k of data and I tried to use parametrized queries in c#, but i was not able to find something to work for me in PHP. Not even close to working.
I tried with ibase_blob_Create and so on i tried inserting directly like Insert into table (blob_value) values (?), ibase_prepare that and so on. Nothing seems to work for me. Is there some magical way to make this work in php or is it just impossible to get large text into blob from php?
Ive tried using things like:
class DBMgmt_Ibase_Blob extends DBMgmt_Generic_Blob
{
var $blob; // resourse link
var $id;
var $database;
function DBMgmt_Ibase_Blob(&$database, $id=null)
{
$this->database =& $database;
$this->id = $id;
$this->blob = null;
}
function read($len)
{
if ($this->id === false) return ''; // wr-only blob
if (!($e=$this->_firstUse())) {
return $e;
}
$data = #ibase_blob_get($this->blob, $len);
if ($data === false) return $this->_setDbError('read');
return $data;
}
function write($data)
{
if (!($e=$this->_firstUse())) return $e;
$ok = #ibase_blob_add($this->blob, $data);
if ($ok === false) return $this->_setDbError('add data to');
return true;
}
function close()
{
if (!($e=$this->_firstUse())) return $e;
if ($this->blob) {
$id = #ibase_blob_close($this->blob);
if ($id === false) return $this->_setDbError('close');
$this->blob = null;
} else {
$id = null;
}
return $this->id ? $this->id : $id;
}
function length()
{
if ($this->id === false) return 0; // wr-only blob
if (!($e=$this->_firstUse())) return $e;
$info = #ibase_blob_info($this->id);
if (!$info) return $this->_setDbError('get length of');
return $info[0];
}
function _setDbError($query)
{
$hId = $this->id === null ? "null" : ($this->id === false ? "false" : $this->id);
$query = "-- $query BLOB $hId";
$this->database->_setDbError($query);
}
// Called on each blob use (reading or writing).
function _firstUse()
{
// BLOB is opened - nothing to do.
if (is_resource($this->blob)) return true;
// Open or create blob.
if ($this->id !== null) {
$this->blob = #ibase_blob_open($this->id);
if ($this->blob === false) return $this->_setDbError('open');
} else {
$this->blob = #ibase_blob_create($this->database->link);
if ($this->blob === false) return $this->_setDbError('create');
}
return true;
}
}
Which i use like this:
$text = new DBMgmt_Ibase_Blob($DB);
if (!$text->write(htmlspecialchars($Data["Text"]))){
throw new Exception("blob fail");
}
$blobid = $text->close();
//similar query
$DB->query("INSERT INTO TABLE1 (BLOB_VALUE) VALUES (?)",$blobid);
After that in my database I find a number which I know I have to use with:
Blob = new DBMgmt_Ibase_Blob($DB,$data->Text);
$data->Text = $Blob->read($Blob->length());
But i get String is not a BLOB ID with a number in database like 30064771072.
I tried directly to add it but of course it does not work like this
$DB->query('insert into table (blob) values (?)',$string); // where string is like 170k chars
I get error of Dynamic SQL Error SQL error code = -104 Unexpected end of command - line 1, column 236
I tryed putting it into file following php.net reference php.net blob_import with code similar to this:
$dbh = ibase_connect($host, $username, $password);
$filename = '/tmp/bar';
$fd = fopen($filename, 'r');
if ($fd) {
$blob = ibase_blob_import($dbh, $fd);
fclose($fd);
if (!is_string($blob)) {
// import failed
} else {
$query = "INSERT INTO foo (name, data) VALUES ('$filename', ?)";
$prepared = ibase_prepare($dbh, $query);
if (!ibase_execute($prepared, $blob)) {
// record insertion failed
}
}
} else {
// unable to open
But I am still getting result like the blob writing method.

Answer 1

You need to use parameters :
$query = ibase_prepare($DB, 'insert into table (blob) values (?)');
ibase_execute($query, $string);
cf : http://php.net/manual/en/function.ibase-execute.php