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Jul 28, 2016 am 08:29 AM
connect mysql self 
<span><?php
</span><span>class </span>Db {
   <span>static private </span><span>$_instance</span>;
   <span>static private </span><span>$_connectSource</span>;
   <span>private </span>$_dbConfig <span>= array</span>(
      <span>'host' </span><span>=> </span><span>'127.0.0.1'</span>,
      <span>'user' </span><span>=> </span><span>'root'</span>,
      <span>'password' </span><span>=> </span><span>''</span>,
      <span>'database' </span><span>=> </span><span>'video'</span>,
   );

   <span>private function </span><span>__construct</span>() {
   }

   <span>static public function </span><span>getInstance</span>() {
      <span>if</span>(<span>!</span>(<span>self::</span><span>$_instance </span><span>instanceof self</span>)) {
         <span>self::</span><span>$_instance </span><span>= new self</span>();
      }
      <span>return self::</span><span>$_instance</span>;
   }

   <span>public function </span><span>connect</span>() {
      <span>if</span>(<span>!self::</span><span>$_connectSource</span>) {
         <span>self::</span><span>$_connectSource </span><span>= @</span><span>mysql_connect</span>($this<span>-></span>_dbConfig[<span>'host'</span>], $this<span>-></span>_dbConfig[<span>'user'</span>], $this<span>-></span>_dbConfig[<span>'password'</span>]);  

         <span>if</span>(<span>!self::</span><span>$_connectSource</span>) {
            <span>throw new </span>Exception(<span>'mysql connect error ' </span><span>. </span><span>mysql_error</span>());
            <span>//die('mysql connect error' . mysql_error());
</span>}
         
         <span>mysql_select_db</span>($this<span>-></span>_dbConfig[<span>'database'</span>], <span>self::</span><span>$_connectSource</span>);
         <span>mysql_query</span>(<span>"set names UTF8"</span>, <span>self::</span><span>$_connectSource</span>);
      }
      <span>return self::</span><span>$_connectSource</span>;
   }
}
<span>/*$connect = Db::getInstance()->connect();
</span><span>$sql = "select * from video";
</span><span>$result = mysql_query($sql, $connect);
</span><span>echo mysql_num_rows($result);
</span><p><span>var_dump($result);*/</span></p><p><span><img src="/static/imghw/default1.png" data-src="http://image.codes51.com/Article/image/20160622/20160622213950_9882.png" class="lazy" alt=" singleton單例模式"></span></p>

? ??? ??? ??? ???? ??? ??? ??? ??? ????? PHP ????? ??? ?? ????? ??? ??? ????.

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? AI ??

Undresser.AI Undress

Undresser.AI Undress

???? ?? ??? ??? ?? AI ?? ?

AI Clothes Remover

AI Clothes Remover

???? ?? ???? ??? AI ?????.

Video Face Swap

Video Face Swap

??? ??? AI ?? ?? ??? ???? ?? ???? ??? ?? ????!

???

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???++7.3.1

???? ?? ?? ?? ???

SublimeText3 ??? ??

SublimeText3 ??? ??

??? ??, ???? ?? ????.

???? 13.0.1 ???

???? 13.0.1 ???

??? PHP ?? ?? ??

???? CS6

???? CS6

??? ? ?? ??

SublimeText3 Mac ??

SublimeText3 Mac ??

? ??? ?? ?? ?????(SublimeText3)

???

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1601
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??? ?? ???? ????? PHP? ?? ??, ??, ?? ? ?? ??? ??????? ?????? ???? ???? ?? ???? ???????. 2. ?? ???? ??? ??? ??? ?? ????????. ???, ?? ???, ?? ?? ?? ?? ??? ??; 3. ?? ?? ???? PHP?? ???? ??? ??? ???? ???? ?? ??? ??? ???? ?? ?? ??? ???? ?? ??? ?????. 4. ?? ??? ???, ??, F1 ? ? CTR, ???? ???? A/B ???? ?? ??? ?????. 5. ?? ??? ??? ?? ??, ??? ?? ??, ?? ?? ?? ? ??? ??? ?? ?? ? ? ????. 6. ?? ??? ???? ?? ? ?? ??, ??? ??, ?? ??? ? SQL ?? ???? ???? ?? ??? ? ??? ??? ?????.

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