mb_regex_set_options never had eval option?
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Extension: mbstring
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Description
- PHP 7.1: Eval option deprecated in
mb_ereg_replaceandmb_eregi_replace(RFC). - PHP 8.0: Eval option removed, but also throws a
ValueErrorwithmb_regex_set_options(not documented, AFAIK).
However, when trying to set e using mb_regex_set_options in versions where it was still allegedly supported, it seems to have no effect.
// In PHP 5.0 through 7.4, this returns ixplnr, without e
var_dump(mb_regex_set_options('ixplner'));
// this does not have the eval effect
var_dump(mb_ereg_replace('(h)', 'strtoupper("\\1")', 'hello', null));
Result in all versions: https://3v4l.org/pXd41G
Was eval ever a thing with mb_regex_set_options? Should I update the docs to reflect reality, or am I missing something?
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Research direction
Start with the linked RFC and the 3v4l.org reproduction, then compare the documented behavior of mb_regex_set_options and mb_ereg_replace. Confirm whether the eval option was ever supported and document the verified behavior or correction once the discrepancy is resolved.
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Assessment
- Tech stack
- php
- Domain
- documentation
- Issue type
- Documentation
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100