I am running into the same issue. I've tried it against php@8.2 and php@8.3 and it's the same. I'm running an M3 Max.

echo gettext("hello");

This will always trigger it.

Putting putenv("LC_ALL=C"); above the echo line above will make it work, however that doesn't solve my actual main issue.

My main issue is that installing mongodb makes php stop working entirely with:
[Tue Jan 16 15:29:54.667430 2024] [core:notice] [pid 59504] AH00052: child pid 59509 exit signal Segmentation fault (11)

I need the mongo driver for a project I'm working on, but when installed apache/php doesn't work anywhere, even scripts that don't call mongo. I think the mongo error and the gettext error are related.

Any ideas on how to fix this? I'm on my second day trying to fix this.

Well, looks like this is back. I'm on Sequoia 15.4, this repo's PHP 7.4, and the old modification that used to fix this (of the home-brew launch file):

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
        <key>EnvironmentVariables</key>
        <dict>
            <key>OBJC_DISABLE_INITIALIZE_FORK_SAFETY</key>
            <string>YES</string>
        </dict>
        <key>KeepAlive</key>

No longer seems to do the trick.

Adding putenv("LC_ALL=C"); does seem to band-aid things for now.