(PHP 3>= 3.0.7, PHP 4 >= 4.0.0)
OCINewDescriptor --
Initialize a new empty descriptor LOB/FILE (LOB is default)
Description
string
OCINewDescriptor ( int connection [, int type])
OCINewDescriptor() Allocates storage to hold
descriptors or LOB locators. Valid values for the valid
type are OCI_D_FILE, OCI_D_LOB, OCI_D_ROWID.
For LOB descriptors, the methods load, save, and savefile are
associated with the descriptor, for BFILE only the load method
exists. See the second example usage hints.
P°φklad 1. OCINewDescriptor <?php
/* This script is designed to be called from a HTML form.
* It expects $user, $password, $table, $where, and $commitsize
* to be passed in from the form. The script then deletes
* the selected rows using the ROWID and commits after each
* set of $commitsize rows. (Use with care, there is no rollback)
*/
$conn = OCILogon($user, $password);
$stmt = OCIParse($conn,"select rowid from $table $where");
$rowid = OCINewDescriptor($conn,OCI_D_ROWID);
OCIDefineByName($stmt,"ROWID",&$rowid);
OCIExecute($stmt);
while ( OCIFetch($stmt) ) {
$nrows = OCIRowCount($stmt);
$delete = OCIParse($conn,"delete from $table where ROWID = :rid");
OCIBindByName($delete,":rid",&$rowid,-1,OCI_B_ROWID);
OCIExecute($delete);
print "$nrows\n";
if ( ($nrows % $commitsize) == 0 ) {
OCICommit($conn);
}
}
$nrows = OCIRowCount($stmt);
print "$nrows deleted...\n";
OCIFreeStatement($stmt);
OCILogoff($conn);
?> |
<?php
/* This script demonstrates file upload to LOB columns
* The formfield used for this example looks like this
* <form action="upload.php3" method="post" enctype="multipart/form-data">
* <input type="file" name="lob_upload">
* ...
*/
if(!isset($lob_upload) || $lob_upload == 'none'){
?>
<form action="upload.php3" method="post" enctype="multipart/form-data">
Upload file: <input type="file" name="lob_upload"><br>
<input type="submit" value="Upload"> - <input type="reset">
</form>
<?php
} else {
// $lob_upload contains the temporary filename of the uploaded file
$conn = OCILogon($user, $password);
$lob = OCINewDescriptor($conn, OCI_D_LOB);
$stmt = OCIParse($conn,"insert into $table (id, the_blob)
values(my_seq.NEXTVAL, EMPTY_BLOB()) returning the_blob into :the_blob");
OCIBindByName($stmt, ':the_blob', &$lob, -1, OCI_B_BLOB);
OCIExecute($stmt, OCI_DEFAULT);
if($lob->savefile($lob_upload)){
OCICommit($conn);
echo "Blob successfully uploaded\n";
}else{
echo "Couldn't upload Blob\n";
}
OCIFreeDesc($lob);
OCIFreeStatement($stmt);
OCILogoff($conn);
}
?> |
|
P°φklad 2. OCINewDescriptor <?php
/* Calling PL/SQL stored procedures which contain clobs as input
* parameters (PHP 4 >= 4.0.6).
* Example PL/SQL stored procedure signature is:
*
* PROCEDURE save_data
* Argument Name Type In/Out Default?
* ------------------------------ ----------------------- ------ --------
* KEY NUMBER(38) IN
* DATA CLOB IN
*
*/
$conn = OCILogon($user, $password);
$stmt = OCIParse($conn, "begin save_data(:key, :data); end;");
$clob = OCINewDescriptor($conn, OCI_D_LOB);
OCIBindByName($stmt, ':key', $key);
OCIBindByName($stmt, ':data', $clob, -1, OCI_B_CLOB);
$clob->WriteTemporary($data);
OCIExecute($stmt, OCI_DEFAULT);
OCICommit($conn);
$clob->close();
$clob->free();
OCIFreeStatement($stmt);
?> |
|