Bug #52785 [NEW]: CGI: error_log may result in output before the headers

From: cataphract Operating system: Debian Lenny PHP version: 5.3.3 Package: CGI related Bug Type: Bug Bug description:CGI: error_log may result in output before the headers Description: ------------ A call to error_log may result in data being output before the headers, thereby corrupting the response. The same doesn't happen with other PHP output functions. The ini directive error_log is set to "no value". The docs say "If this directive is not set, errors are sent to the SAPI error logger". Test script: --------------- <?php error_log("oops"); echo "content"; inexistent_function(); //fatal; no problem Expected result: ---------------- X-Powered-By: PHP/5.3.3 Content-type: text/html oops content<br /> <b>Fatal error</b>: Call to undefined function inexistent_function() in <b>/home/glopes/test.php</b> on line <b>4</b><br /> Actual result: -------------- $ /opt/php5/bin/php-cgi test.php oops X-Powered-By: PHP/5.3.3 Content-type: text/html content<br /> <b>Fatal error</b>: Call to undefined function inexistent_function() in <b>/home/glopes/test.php</b> on line <b>4</b><br /> -- Edit bug report at http://bugs.php.net/bug.php?id=52785&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=52785&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=52785&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=52785&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=52785&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=52785&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=52785&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=52785&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=52785&r=needscript Try newer version: http://bugs.php.net/fix.php?id=52785&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=52785&r=support Expected behavior: http://bugs.php.net/fix.php?id=52785&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=52785&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=52785&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=52785&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=52785&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=52785&r=dst IIS Stability: http://bugs.php.net/fix.php?id=52785&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=52785&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=52785&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=52785&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=52785&r=mysqlcfg