Php/docs/function.oci-new-descriptor
oci_new_descriptor
(PHP 5, PHP 7, PECL OCI8 >= 1.1.0)
oci_new_descriptor — 初始化一个新的空 LOB 或 FILE 描述符
说明
oci_new_descriptor
( resource $connection
[, int $type
] ) : OCI-Lob
oci_new_descriptor() 分配资源以保存描述符或
LOB 定位器。有效的 type 值是：OCI_D_FILE，OCI_D_LOB
以及 OCI_D_ROWID。
Example #1 oci_new_descriptor() 例子
<?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) */ $conn = oci_connect($user, $password); $stmt = oci_parse($conn, "select rowid from $table $where"); $rowid = oci_new_descriptor($conn, OCI_D_ROWID); oci_define_by_name($stmt, "ROWID", $rowid); oci_execute($stmt); while (oci_fetch($stmt)) { $nrows = oci_num_rows($stmt); $delete = oci_parse($conn, "delete from $table where ROWID = :rid"); oci_bind_by_name($delete, ":rid", $rowid, -1, OCI_B_ROWID); oci_execute($delete); echo "$nrows\n"; if (($nrows % $commitsize) == 0) { oci_commit($conn); } } $nrows = oci_num_rows($stmt); echo "$nrows deleted...\n"; oci_free_statement($stmt); oci_close($conn);?>
<?php /* This script demonstrates file upload to LOB columns * The formfield used for this example looks like this * <form action="upload.php" method="post" enctype="multipart/form-data"> * <input type="file" name="lob_upload" /> * ... */ if (!isset($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" value="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 $conn = oci_connect($user, $password); $lob = oci_new_descriptor($conn, OCI_D_LOB); $stmt = oci_parse($conn, "insert into $table (id, the_blob) values(my_seq.NEXTVAL, EMPTY_BLOB()) returning the_blob into :the_blob"); oci_bind_by_name($stmt, ':the_blob', $lob, -1, OCI_B_BLOB); oci_execute($stmt, OCI_DEFAULT); if ($lob->savefile($lob_upload)){ oci_commit($conn); echo "Blob successfully uploaded\n"; }else{ echo "Couldn't upload Blob\n"; } oci_free_descriptor($lob); oci_free_statement($stmt); oci_close($conn); }?>
Example #2 oci_new_descriptor() 例子
<?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 * */ $conn = oci_connect($user, $password); $stmt = oci_parse($conn, "begin save_data(:key, :data); end;"); $clob = oci_new_descriptor($conn, OCI_D_LOB); oci_bind_by_name($stmt, ':key', $key); oci_bind_by_name($stmt, ':data', $clob, -1, OCI_B_CLOB); $clob->write($data); oci_execute($stmt, OCI_DEFAULT); oci_commit($conn); $clob->free(); oci_free_statement($stmt);?>
oci_new_descriptor() 如果出错返回 false。
Note:
在 PHP 5.0.0 之前的版本必须使用 ocinewdescriptor() 替代本函数。该函数名仍然可用，为向下兼容作为 oci_new_descriptor() 的别名。不过其已被废弃，不推荐使用。
