Bug #75141 [NEW]: implode returns NULL at times.

From: abeal at eelzee dot com Operating system: ANY PHP version: 5.6.31 Package: PHP Language Specification Bug Type: Bug Bug description:implode returns NULL at times. Description: ------------ --- From manual page: http://www.php.net/function.implode --- It seems that in certain cases, implode returns NULL. This seems in violation of the specification. One of the commenters mentions that it will do so if passed a string as well. Should this not be rectified, at least for future versions? If not, should the documentation be updated to reflect the circumstances where NULL is returned instead of an empty string? Test script: --------------- // Prints "TRUE"; print "Is null: " . (NULL === implode(" - ", [])) ? "TRUE" : "FALSE"; -- Edit bug report at https://bugs.php.net/bug.php?id=75141&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75141&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75141&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75141&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=75141&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=75141&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=75141&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=75141&r=needscript Try newer version: https://bugs.php.net/fix.php?id=75141&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=75141&r=support Expected behavior: https://bugs.php.net/fix.php?id=75141&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=75141&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=75141&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=75141&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75141&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=75141&r=dst IIS Stability: https://bugs.php.net/fix.php?id=75141&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=75141&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=75141&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=75141&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=75141&r=mysqlcfg