Bug #78355 [NEW]: Getting the last day of a given month failing at months of 31 days

From: belbayar at mobicom dot mn Operating system: Centos 7 PHP version: 7.3Git-2019-07-31 (Git) Package: Date/time related Bug Type: Bug Bug description:Getting the last day of a given month failing at months of 31 days Description: ------------ I have a problem like this. For a given date I need to get the last day of the previous month. For example today is 2019-07-31, I needed date is 2019-06-30 Test script: --------------- echo date('Y-m-t', strtotime("2019-07-31" . '-1 months')); echo date("Y-m-d", strtotime("-1 Month")); Expected result: ---------------- 2019-07-31 2019-07-01 Actual result: -------------- 2019-06-30 2019-06-01 or 2019-06-30 -- Edit bug report at https://bugs.php.net/bug.php?id=78355&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=78355&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=78355&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=78355&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=78355&r=needscript Try newer version: https://bugs.php.net/fix.php?id=78355&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=78355&r=support Expected behavior: https://bugs.php.net/fix.php?id=78355&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=78355&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=78355&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=78355&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=78355&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=78355&r=dst IIS Stability: https://bugs.php.net/fix.php?id=78355&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=78355&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=78355&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=78355&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=78355&r=mysqlcfg