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[2021-09-23 13:01 UTC] wim at squeezely dot tech
Description:
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Would it be possible to add support for named capture groups to preg_replace()?
php > var_dump(preg_replace('/([a-z]+)$/', 'ice-cream-with-${1}', 'I-like-chocolate-sprinkles'));
string(41) "I-like-chocolate-ice-cream-with-sprinkles"
Add support for:
var_dump(preg_replace('/(?<namedGroup>[a-z]+)$/', 'ice-cream-with-${namedGroup}', 'I-like-chocolate-sprinkles'));
Test script:
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php > var_dump(preg_replace('/(?<namedGroup>[a-z]+)$/', 'ice-cream-with-${namedGroup}', 'I-like-chocolate-sprinkles'));
Expected result:
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string(41) "I-like-chocolate-ice-cream-with-sprinkles"
Actual result:
--------------
string(45) "I-like-chocolate-ice-cream-with-${namedGroup}"
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Last updated: Sat Oct 25 16:00:02 2025 UTC |
TBH I don't think this is worthwhile anymore at this point. With preg_replace_callback you can do: preg_replace_callback('/(?<namedGroup>[a-z]+)$/', fn($m) => "ice-cream-with-$m[namedGroup]", 'I-like-chocolate-sprinkles')); Which is not much worse than dedicated syntax, and gives you the full generality of PHP without any questions about edge-case behavior.