OCINewCursor
ocinlogon
OCI8 Functions
PHP Manual

# OCINewDescriptor

(PHP 4, PHP 5, PECL oci8 >= 1.0.0)

OCINewDescriptor — Inicializa un nuevo descriptor vacío LOB/FILE (LOB por defecto)

### Descripción

string OCINewDescriptor ( int `$connection` [, int `$type` ] )

OCINewDescriptor() Reserva espacio para mantener descriptores o localizadores LOB. Los valores válidos para el tipo `type` son OCI_D_FILE, OCI_D_LOB, OCI_D_ROWID. Para descriptores LOB, los métodos load, save, y savefile están asociados con el descriptor, para BFILE sólo el método load existe. Vea el segundo ejemplo.

Example #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);
if($lob->savefile($lob_upload)){
OCICommit($conn);
echo "Blob successfully uploaded\n";
}else{
echo "Couldn't upload Blob\n";
}
OCIFreeDescriptor($lob);
OCIFreeStatement($stmt);
OCILogoff($conn);
}
?>

OCINewCursor
ocinlogon
OCI8 Functions
PHP Manual