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<?php $key = '价格'; $doc = []; $doc[$key] = "1a"; $value = $doc[$key]; var_dump($doc); if(preg_match('/^\d+/', $value)) $doc[$key] = floatval($value); else unset($doc[$key]); var_dump($doc);
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { ["价格"]=> string(2) "1a" } array(1) { ["价格"]=> float(1) }

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