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<?php $str = "tea dae 15 abc 7,2 kg abc aa 1 aa"; $result = ""; if (preg_match('~(\d+(?:,\d+)?)\s*(kg)\b~', $str, $m)) { $result = $m[1] . $m[2]; } echo $result;
Output for git.master, git.master_jit, rfc.property-hooks
7,2kg

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29.51 ms | 405 KiB | 5 Q