Doc #78163 [NEW]: preg_quote() documented as accepting null for $delimiter, which actually throws

From: sp at fp dot de Operating system: PHP version: 7.3.6 Package: PCRE related Bug Type: Documentation Problem Bug description:preg_quote() documented as accepting null for $delimiter, which actually throws Description: ------------ Referring to Nikitas post: https://www.mail-archive.com/internals@lists.php.net/msg98043.html > If you see something that is documented as =null, but does not behave the > same when null is passed, please do report a bug. preg_quote() seems to fall under that category: https://www.php.net/manual/en/function.preg-quote.php It is documented as: preg_quote ( string $str [, string $delimiter = NULL ] ) : string But actually passing NULL as second argument throws TypeError with strict_types=1: "Fatal error: Uncaught TypeError: preg_quote() expects parameter 2 to be string, null given" Test script: --------------- https://3v4l.org/ufjFF -- Edit bug report at https://bugs.php.net/bug.php?id=78163&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=78163&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=78163&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=78163&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=78163&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=78163&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=78163&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=78163&r=needscript Try newer version: https://bugs.php.net/fix.php?id=78163&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=78163&r=support Expected behavior: https://bugs.php.net/fix.php?id=78163&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=78163&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=78163&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=78163&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=78163&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=78163&r=dst IIS Stability: https://bugs.php.net/fix.php?id=78163&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=78163&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=78163&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=78163&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=78163&r=mysqlcfg