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正则匹配是否是科学技术

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2016-05-24 12:53:011230browse

正则匹配是否是科学技术

$a='1.8943E+10';

if(preg_match("#[a-zA-Z|\.\+]+#iUs",$a)){
 echo "匹配到了";
}else{
  echo "没有";
};
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