#33530 [NEW]: str_replace replaces nulls with empty strings

From: tony at marston-home dot demon dot co dot uk Operating system: Windows XP PHP version: 5.0.4 PHP Bug Type: PCRE related Bug description: str_replace replaces nulls with empty strings Description: ------------ When I use str_replace on an associative array to replace '<br>' with "\n" I find that values that were null have been replaced with empty strings. This affects subsequent processing as an empty string is not the same as null. Reproduce code: --------------- $pattern[] = "<br>"; $pattern[] = "<br/>"; $pattern[] = "<br />"; $replacement = "\n"; $array = array('field1' => '<br>', 'field2' => '', 'field3' => null) $array = str_replace($pattern, $replacement, $array); Expected result: ---------------- Null values should be left as null values, and not replaced with empty strings. Actual result: -------------- Values in the array that were null are being replaced with empty strings. -- Edit bug report at http://bugs.php.net/?id=33530&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=33530&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=33530&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=33530&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=33530&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=33530&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=33530&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=33530&r=needscript Try newer version: http://bugs.php.net/fix.php?id=33530&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=33530&r=support Expected behavior: http://bugs.php.net/fix.php?id=33530&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=33530&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=33530&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=33530&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=33530&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=33530&r=dst IIS Stability: http://bugs.php.net/fix.php?id=33530&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=33530&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=33530&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=33530&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=33530&r=mysqlcfg