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# ocinewdescriptor

(PHP 3>= 3.0.7, PHP 4 , PHP 5)

ocinewdescriptor -- Inicializa um novo descritor LOB ou FILE vazios

## Descrição

object ocinewdescriptor ( resource connection [, int type] )

ocinewdescriptor() destina armazenagem para segurar descritores ou LOB localizador. Valores válidos para type são `OCI_D_FILE`, `OCI_D_LOB` and `OCI_D_ROWID`. Para LOB descritores, os métodos para carregar, salvar, e salvar arquivo são associados com o descritor, para BFILE somente o método de carregamento existe. Veja o segundo exemplo usando hints.

Exemplo 1. ocinewdescriptor() example
`<?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($conn); ?>`
`<?php /* This script demonstrates file upload to LOB columns * The formfield used for this example looks like this * <form action="upload.php" method="POST" enctype="multipart/form-data"> * <input type="file" name="lob_upload"> * ... */ if(!isset($lob_upload) || $lob_upload == 'none'){ ?> <form action="upload.php" 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 // see also the features section on file upload, // if you would like to use secure uploads $conn = OCILogon($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); } ?>`

Exemplo 2. ocinewdescriptor() second example
`<?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); ?>`

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