Description:
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If I set the fourth parameter (charset) of function oci_connect() to 'UTF8' (=set client charset to Unicode) and then select a CLOB value from my table, the value gets truncated.

Tried on two databases:
1. Oracle 9i (server charset is WE8ISO8859P1)
2. Oracle 10g XE (server charset is AL32UTF8)

PHP 4.4.2 is linked against OIC-10.2.0.1 libraries.

The bug is not reproducible with the standard PHP oci8 extension, but is with PECL/oci8.

Reproduce code:
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<?
// CREATE TABLE clob_test (lob CLOB);
$origLobVal = str_repeat( 'x', 500 ); // randomly chosen character
$conn = oci_connect( 'scott', 'tiger', 'orcl', 'UTF8' );
$stmt = oci_parse( $conn, 'DELETE FROM clob_test' );
oci_execute( $stmt, OCI_COMMIT_ON_SUCCESS );
$stmt = oci_parse( $conn, "INSERT INTO clob_test VALUES (EMPTY_CLOB()) RETURNING lob INTO :lob" );
$lob = oci_new_descriptor( $conn, OCI_D_LOB );
oci_bind_by_name( $stmt, ":lob", $lob, -1, OCI_B_CLOB );
oci_execute( $stmt, OCI_DEFAULT );
$lob->save( $origLobVal );
oci_commit( $conn );
$lob->free();
$stmt = oci_parse ( $conn, 'SELECT lob FROM clob_test' );
oci_execute( $stmt, OCI_DEFAULT );
$row = oci_fetch_array( $stmt, OCI_NUM );
$realLobVal = $row[0]->load();
printf( "original len: %d\nreal len:     %d\n", strlen( $origLobVal ), strlen( $realLobVal ) );
oci_free_statement( $stmt );
?>

Expected result:
----------------
original len: 500
real len:     500


Actual result:
--------------
original len: 500
real len:     166