#36934 [NEW]: OCILob->read() doesn't move internal pointer when reading 0's

From: sswpwp at poczta dot onet dot pl Operating system: Windows 2000 PHP version: 5CVS-2006-03-31 (snap) PHP Bug Type: OCI8 related Bug description: OCILob->read() doesn't move internal pointer when reading 0's Description: ------------ When using OCILob->read(length) function with BLOBs containing 0's it reads specified amount of bytes but doesn't move internal pointer properly. The pointer is moved to the next '0' byte and no further. I think the possible cause of this bug is line 223 in oci8_lob.c file: data_len_chars = OCIMultiByteStrnDisplayLength(connection->env, *data, bytes_total); Propably the function quits after reaching '\0' character instead of checking bytes_total bytes and as such should be used only with CLOBs. Reproduce code: --------------- First 128 bytes in the BLOB I'm reading are 0's, then there are 5 non-zero bytes followed by some more 0's. $stmt = oci_parse($auth->conn, "SELECT ZDJT_IMAGE FROM IMAGES WHERE IMAGE_ID = 1"); oci_execute($stmt); $row = oci_fetch_assoc($stmt); $row['ZDJT_IMAGE']->read(128); echo $row['ZDJT_IMAGE']->tell(); $row['ZDJT_IMAGE']->read(128); echo $row['ZDJT_IMAGE']->tell(); $row['ZDJT_IMAGE']->seek(128); echo $row['ZDJT_IMAGE']->tell(); $row['ZDJT_IMAGE']->read(128); echo $row['ZDJT_IMAGE']->tell(); Expected result: ---------------- The expected result would be: 128 256 128 256 Actual result: -------------- 0 0 128 133 -- Edit bug report at http://bugs.php.net/?id=36934&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=36934&r=trysnapshot44 Try a CVS snapshot (PHP 5.1): http://bugs.php.net/fix.php?id=36934&r=trysnapshot51 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=36934&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=36934&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=36934&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=36934&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=36934&r=needscript Try newer version: http://bugs.php.net/fix.php?id=36934&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=36934&r=support Expected behavior: http://bugs.php.net/fix.php?id=36934&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=36934&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=36934&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=36934&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=36934&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=36934&r=dst IIS Stability: http://bugs.php.net/fix.php?id=36934&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=36934&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=36934&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=36934&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=36934&r=mysqlcfg