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<?php $pattern = "~([^\d.,]|[.,](?!\d{2}$))|(,)~m"; $strings = [ "2.578,20", "2 354,20", "234", "234,256.20", "234,205", "246 548", "244'056", "26'155.25", "12,20", "13.33", ]; foreach ($strings as $string) { echo preg_replace_callback($pattern, function ($matches) { if (isset($matches[2])) return "."; if (isset($matches[1])) return ""; }, $string) . PHP_EOL; }
Output for git.master, git.master_jit, rfc.property-hooks
2578.20 2354.20 234 234256.20 234205 246548 244056 26155.25 12.20 13.33

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