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查找字符串第n次出现的位置

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Release: 2016-05-25 17:07:42
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php代码

public function str_n_pos($str,$find,$n){
		for ($i=1;$i<=$n;$i++){
			$pos = strpos($str,$find);
			$str = substr($str,$pos+1);
			$pos_val=$pos+$pos_val+1;
		}
		return $pos_val-1;
	}
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