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<?php $string='先秦兩漢'; var_export(preg_split('~~u', $string, 0, PREG_SPLIT_NO_EMPTY)); echo "\n---\n"; var_export(preg_split('~\X\K~u', $string, 0, PREG_SPLIT_NO_EMPTY)); echo "\n---\n"; var_export(preg_split('~\X\K(?!$)~u', $string)); echo "\n---\n"; var_export(mb_split('\X\K(?!$)', $string)); echo "\n---\n"; var_export(preg_match_all('~\X~u', $string, $out) ? $out[0] : []);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => '先', 1 => '秦', 2 => '兩', 3 => '漢', ) --- array ( 0 => '先', 1 => '秦', 2 => '兩', 3 => '漢', ) --- array ( 0 => '先', 1 => '秦', 2 => '兩', 3 => '漢', ) --- array ( 0 => '先秦兩漢', ) --- array ( 0 => '先', 1 => '秦', 2 => '兩', 3 => '漢', )

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