Bug #78850 [NEW]: PHP Version 7.2.3 - fseek

From: david dot wildermoth at yandex dot com Operating system: Widows 10 PHP version: 7.2.24 Package: Program Execution Bug Type: Bug Bug description:PHP Version 7.2.3 - fseek Description: ------------ --- https://www.php.net/manual/en/function.fseek.php --- This "fseek" coding has a malfunction:- $record = fopen("C:xampp/htdocs/application/views/record.php", "r+"); fseek($record, 200); //fseek malfunctions $gm = gmdate("\nd M Y H:i T"); fwrite($record, $gm); $ad = (" - $advertiser") . "<br>"; fwrite($record, $ad); That producers a result similar to the following:- 21 Nov 2019 - 14:38 GMT - chris<br> Which is 35 bytes or thereabouts. That is OK for the first record, but if there exists a previous record, then that previous record will be overwritten which is what I don't want. If I advance (by white space) a previous record by about 35-40 bytes the new record will print plus consume an additional 35 odd bytes, and that previous record moves 35 bytes closer to the new record. I want to avoid that extra consumption. I want the output to consume only the bytes of its length, no more. If I insert "a" which takes the pointer to the end, everything works but the output is "recent at the bottom" whereas I want "recent at the top" hence using "r+" and "fseek". I have read the PHP manual on fseek() and fwrite() and others but there is nothing suggesting a consumption limitation, or similar. I've also tried various addins but nothing has worked. Expected result: ---------------- I want the output to consume only the bytes of its length, no more. -- Edit bug report at https://bugs.php.net/bug.php?id=78850&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=78850&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=78850&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=78850&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=78850&r=needscript Try newer version: https://bugs.php.net/fix.php?id=78850&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=78850&r=support Expected behavior: https://bugs.php.net/fix.php?id=78850&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=78850&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=78850&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=78850&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=78850&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=78850&r=dst IIS Stability: https://bugs.php.net/fix.php?id=78850&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=78850&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=78850&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=78850&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=78850&r=mysqlcfg