curl、fopen和file_get_contents区别

<precourier new border-width:1px border-style:solid border-color:rgb rgb background-color:rgb padding:5px><span></span><span>php</span><span>  $curl </span><span>=</span><span> curl_init</span><span>();</span><span>//初始化一个cURL对象</span><span>  $url </span><span>=</span><span></span><span>"http://cart.jd.com/cart/cart.html?backurl=http://item.jd.com/176166.html&amp;rid=0.9533184533      938766"</span><span>;</span><span>  $header </span><span>=</span><span> array</span><span>();</span><span>  $header</span><span>[]</span><span></span><span>=</span><span></span><span>'User-Agent: 5.0 (iPhone; U; CPU iPhone OS 4_3 like Mac OS X; en-us)'</span><span>;</span><span>  $header</span><span>[]</span><span></span><span>=</span><span></span><span>'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8'</span><span>;</span><span>  $header</span><span>[]=</span><span></span><span>'Accept-Encoding: gzip,deflate'</span><span>;</span><span>  $header</span><span>[]=</span><span></span><span>'//可以根据需要增加header内容'</span><span>;</span><span>  curl_setopt</span><span>(</span><span>$culr</span><span>,</span><span>CURLOPT_URL</span><span>,</span><span> $url</span><span>);</span><span>//设置你需要抓去的URL地址</span><span>  curl_setopt</span><span>(</span><span>$curl</span><span>,</span><span>CURLOPT_HEADER</span><span>,</span><span>$header </span><span>);</span><span>//设置header</span><span>  curl_setopt</span><span>(</span><span>$curl</span><span>,</span><span>CURLOPT_RETURNTRANSFER</span><span>,</span><span>1</span><span>);</span><span>//将结果返回输出到字符串</span><span>  $str </span><span>=</span><span> curl_exec</span><span>(</span><span>$curl</span><span>);运行</span><span>cURL</span><span>,请求网页</span><span>  curl_close</span><span>(</span><span>$curl</span><span>);</span><span>//关闭url请求</span><span></span><span>return</span><span> $str</span><span>;</span><span>//返回或者显示结果</span><span>?&gt;</span></precourier>