Doc #77316 [Ver->Csd]: (?X) produces warning: Compilation failed: unrecognized character after (? or (

Edit report at https://bugs.php.net/bug.php?id=77316&edit=1 ID: 77316 Updated by: cmb@php.net Reported by: sp at fp dot de Summary: (?X) produces warning: Compilation failed: unrecognized character after (? or ( -Status: Verified +Status: Closed Type: Documentation Problem Package: PCRE related PHP Version: 7.3.0 Assigned To: cmb Block user comment: N Private report: N New Comment: This bug has been fixed in the documentation's XML sources. Since the online and downloadable versions of the documentation need some time to get updated, we would like to ask you to be a bit patient. Thank you for the report, and for helping us make our documentation better. Previous Comments: ------------------------------------------------------------------------ [2018-12-18 19:22:11] cmb@php.net Automatic comment from SVN on behalf of cmb Revision: http://svn.php.net/viewvc/?view=revision&revision=346384 Log: Fix #77316: (?X) produces warning: Compilation failed: unrecognized character after (? or ( ------------------------------------------------------------------------ [2018-12-18 19:10:46] cmb@php.net > "The current patch reverts the behavior to the meaning of 'X' > how it was in PCRE" This is about the X *modifier*, not about the internal option. So yes, this is a documentation issue. ------------------------------------------------------------------------ [2018-12-18 18:35:07] sp at fp dot de Description: ------------ Using the PCRE_EXTRA modifier as an internal option setting inside the pattern string now produces a warning: "Warning: preg_match(): Compilation failed: unrecognized character after (? or (?- at offset 2" I'm not really sure if this is intentional, as the RFC states: "The current patch reverts the behavior to the meaning of 'X' how it was in PCRE" https://wiki.php.net/rfc/pcre2-migration If it indeed is intentional, then at least the documentation should be updated accordingly: http://php.net/manual/en/regexp.reference.internal-options.php Test script: --------------- preg_match('/(?X)/', ''); ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=77316&edit=1