手把手教你做关键词匹配项目（搜索引擎）---- 第三天，教你做----
第三天
小王（运营总监）看到小丁丁整天都在淘宝、百度、魔方、拍拍上面淘关键词，每天花费的时间好长，工作效率又低，拿着这个借口来找到我。
说到：小帅帅，你看小丁丁每天都在淘宝、百度、魔方、拍拍上面淘关键词花费的时间好长，你能不能帮帮忙，看看能不能让系统自己做啦，这样可以节省好多人力，带来的效益多高。（0 其实就是为了掩饰他们懒惰 0）
小帅帅一听到可以带来的效益好高，王总还求着我呢 ，马上 两眼冒着星光，是该好好体现， 解决这个问题就可以体现出我的价值。
立即学习“PHP免费学习笔记（深入）”；
小帅帅拍着胸膛保证到：王总，这个小KS啦，马上帮你办到。 （ 0 程序员就是这么可爱，乐于挑战，乐于接受，从不需要高额的回报 0 ）
小王拍了拍小帅帅: 好小伙子，好好加油，等你的好消息。
小帅帅从此乐呵了一整天。从没去想想这是多么蛋疼的一项任务。
关键词来源示例图：
当小帅帅醒过来时，才意识到原来这个项目不是一般的蛋疼啊。
小帅帅不知道如何下手，就屁颠屁颠的跑到小于（技术总监）旁边（0 有技术总监真好，强大的靠山，反正有人背黑锅 0）。
说到：于老大，刚才王总给了这个任务给我，我不晓得怎么办好，能否高抬贵嘴，指导下。
于老大瞄了一眼,说到：你是用php做的吧，php做就复杂点咯，知道curl、html dom解析吗？
小帅帅，说到：不太懂耶，没用过，看起来好高深的样子。
于老大鄙视了一番：这有什么高深的，很简单的，百度一下咯。（老大就是老大，什么事情在他眼里都是简单的，好崇拜的对象）
于老大在baidu搜索框里面输入 php curl，查出了结果让小帅帅去了解。
php curl手册: http://cn2.php.net/manual/zh/book.curl.php
小帅帅查看玩手册后，随手写了一份：
<span>#</span><span>请求淘宝首页</span>
<span>$curl</span> =<span> curl_init();
curl_setopt_array(</span><span>$curl</span>,<span>array</span><span>(
CURLOPT_FAILONERROR </span>=> <span>false</span>,<span>
CURLOPT_RETURNTRANSFER </span>=> <span>true</span>,<span>
CURLOPT_FOLLOWLOCATION </span>=> 1,<span>
CURLOPT_CONNECTTIMEOUT </span>=> 15,<span>
CURLOPT_TIMEOUT </span>=> 60,
<span>//</span><span>CURLOPT_COOKIESESSION => 1, </span>
CURLOPT_URL => "http://www.taobao.com"<span>
));
</span><span>$result</span> = curl_exec(<span>$this</span>-><span>curl);
</span><span>echo</span> <span>$result</span>;小帅帅非常高兴，因为学到了新的知识。小帅帅又犯愁了，内容是取到了，怎么取里面的关键词？
小帅帅又屁颠屁颠的跑到小于（技术总监），去请教。
说道：于老大，curl我已经弄懂了，我取道淘宝的首页了，下面怎么办？
于老大瞄了一眼代码，很不乐意的说道：恩，写是写好了，怎么看着这么别扭。
小帅帅心里就不乐意了，想到我写的明明这么好，又简单使用，怎么别扭了。
于老大就把以前的代码翻出来，随手扔给小帅帅，说到：你先去看懂这份代码，用这份代码重新写一份？
文件内容：
<span>/*</span><span>*
* cURL 常用操作封装
*
* @author oShine
</span><span>*/</span>
<span>class</span><span> ExtendedCurl
{
</span><span>/*</span><span>*
* 返回 JSON 内容为对象
</span><span>*/</span>
<span>const</span> JSON_OBJECT = 0<span>;
</span><span>/*</span><span>*
* 返回 JSON 内容为数组
</span><span>*/</span>
<span>const</span> JSON_ARRAY = 1<span>;
</span><span>/*</span><span>*
* cURL Handle
*
* @var resource
</span><span>*/</span>
<span>private</span> <span>$curl</span><span>;
</span><span>/*</span><span>*
* 当前（默认） cURL 参数
*
* @var array
</span><span>*/</span>
<span>private</span> <span>$options</span> = <span>array</span><span>(
CURLOPT_FAILONERROR </span>=> <span>false</span>,<span>
CURLOPT_RETURNTRANSFER </span>=> <span>true</span>,<span>
CURLOPT_FOLLOWLOCATION </span>=> 1,<span>
CURLOPT_CONNECTTIMEOUT </span>=> 15,<span>
CURLOPT_TIMEOUT </span>=> 60,
<span>//</span><span>CURLOPT_COOKIESESSION => 1, </span>
<span> );
</span><span>/*</span><span>*
* 最后一次请求的错误信息
*
* @var null|string
</span><span>*/</span>
<span>private</span> <span>$error</span> = <span>null</span><span>;
</span><span>/*</span><span>*
* @var int
</span><span>*/</span>
<span>private</span> <span>$httpCode</span> = <span>null</span><span>;
</span><span>/*</span><span>*
* @param array $defaultOptions
* @internal param array $options 可选的覆盖默认 cURL 参数
</span><span>*/</span>
<span>public</span> <span>function</span> __construct(<span>array</span> <span>$defaultOptions</span> = <span>array</span><span>())
{
</span><span>$this</span>->curl =<span> curl_init();
</span><span>if</span> (!<span>empty</span>(<span>$defaultOptions</span><span>)) {
</span><span>$this</span>->options = <span>$defaultOptions</span><span>;
}
}
</span><span>/*</span><span>*
* 设置 cURL 多个选项
*
* @param array $options
</span><span>*/</span>
<span>public</span> <span>function</span> setOptions(<span>array</span> <span>$options</span><span>)
{
</span><span>foreach</span> (<span>$options</span> <span>as</span> <span>$key</span> => <span>$value</span><span>) {
</span><span>$this</span>->setOption(<span>$key</span>, <span>$value</span><span>);
}
}
</span><span>/*</span><span>*
* 设置 cURL 单个选项
*
* @param $key
* @param $value
</span><span>*/</span>
<span>public</span> <span>function</span> setOption(<span>$key</span>, <span>$value</span><span>)
{
</span><span>$this</span>->options[<span>$key</span>] = <span>$value</span><span>;
}
</span><span>/*</span><span>*
* 发送 GET 请求并返回解析后的 JSON 内容
*
* @param $url
* @param array $data
* @param int $type
* @return null|object|array
</span><span>*/</span>
<span>public</span> <span>function</span> getJson(<span>$url</span>, <span>array</span> <span>$data</span> = <span>array</span>(), <span>$type</span> = self::<span>JSON_ARRAY)
{
</span><span>$content</span> = <span>$this</span>->get(<span>$url</span>, <span>$data</span><span>);
</span><span>return</span> json_decode(<span>$content</span>, <span>$type</span><span>);
}
</span><span>/*</span><span>*
* 发送 GET 请求
*
* @param $url
* @param array $data
* @return null|string
</span><span>*/</span>
<span>public</span> <span>function</span> get(<span>$url</span>, <span>array</span> <span>$data</span> = <span>array</span><span>())
{
</span><span>if</span> (!<span>empty</span>(<span>$data</span><span>)) {
</span><span>if</span> (<span>false</span> === <span>strpos</span>(<span>$url</span>, '?'<span>)) {
</span><span>$url</span> .= '?'<span>;
} </span><span>else</span><span> {
</span><span>$url</span> .= '&'<span>;
}
</span><span>$url</span> .= <span>http_build_query</span>(<span>$data</span><span>);
}
</span><span>$options</span> = <span>array</span><span>(
CURLOPT_URL </span>=> <span>$url</span>,<span>
);
</span><span>return</span> <span>$this</span>->request(<span>$options</span><span>);
}
</span><span>/*</span><span>*
* 发送 cURL 请求
*
* @param array $options
* @return mixed
</span><span>*/</span>
<span>private</span> <span>function</span> request(<span>array</span> <span>$options</span> = <span>array</span><span>())
{
</span><span>$this</span>->setOptions(<span>$options</span><span>);
curl_setopt_array(</span><span>$this</span>->curl, <span>$this</span>-><span>options);
</span><span>$result</span> = curl_exec(<span>$this</span>-><span>curl);
</span><span>$errorNo</span> = curl_errno(<span>$this</span>-><span>curl);
</span><span>$response</span> = curl_getinfo( <span>$this</span>-><span>curl );
</span><span>if</span> (<span>$errorNo</span><span>) {
</span><span>$this</span>->error = '[' . <span>$errorNo</span> . '] ' . curl_error(<span>$this</span>-><span>curl);
} </span><span>else</span><span> {
</span><span>$this</span>->error = <span>null</span><span>;
}
</span><span>if</span>(<span>isset</span>(<span>$response</span>['http_code'<span>])){
</span><span>$this</span>->httpCode = <span>$response</span>['http_code'<span>];
}
</span><span>return</span> <span>$result</span><span>;
}
</span><span>/*</span><span>*
* 发送 POST 请求并返回解析后的 JSON 内容
*
* @param $url
* @param array $data
* @param int $type
* @return null|object|array
</span><span>*/</span>
<span>public</span> <span>function</span> postJson(<span>$url</span>, <span>array</span> <span>$data</span> = <span>array</span>(), <span>$return</span> = self::<span>JSON_ARRAY)
{
</span><span>$content</span> = <span>$this</span>->post(<span>$url</span>, <span>$data</span><span>);
</span><span>return</span> json_decode(<span>$content</span>, <span>$return</span><span>);
}
</span><span>/*</span><span>*
* 发送 POST 请求
*
* @param $url
* @param array $data
* @return null|string
</span><span>*/</span>
<span>public</span> <span>function</span> post(<span>$url</span>, <span>array</span> <span>$data</span> = <span>array</span><span>())
{
</span><span>$options</span> = <span>array</span><span>(
CURLOPT_URL </span>=> <span>$url</span>,<span>
CURLOPT_POST </span>=> 1,<span>
);
</span><span>if</span> (!<span>empty</span>(<span>$data</span><span>)) {
</span><span>if</span> (<span>$this</span>->isMultiPart(<span>$data</span><span>)) {
</span><span>$options</span>[CURLOPT_POSTFIELDS] = <span>$data</span><span>;
} </span><span>else</span><span> {
</span><span>$options</span>[CURLOPT_POSTFIELDS] = <span>http_build_query</span>(<span>$data</span><span>);
}
}
</span><span>return</span> <span>$this</span>->request(<span>$options</span><span>);
}
</span><span>private</span> <span>function</span> isMultiPart(<span>$data</span><span>)
{
</span><span>foreach</span> (<span>$data</span> <span>as</span> <span>$value</span><span>) {
</span><span>if</span> ('@' == <span>$value</span>[0<span>])
</span><span>return</span> <span>true</span><span>;
}
</span><span>return</span> <span>false</span><span>;
}
</span><span>/*</span><span>*
* 判断最后一次请求是否有错误
*
* @return bool
</span><span>*/</span>
<span>public</span> <span>function</span><span> hasError()
{
</span><span>return</span> <span>null</span> !== <span>$this</span>-><span>error;
}
</span><span>/*</span><span>*
* 获取最后一次请求的错误信息
*
* @return null|string
</span><span>*/</span>
<span>public</span> <span>function</span><span> getError()
{
</span><span>return</span> <span>$this</span>-><span>error;
}
</span><span>public</span> <span>function</span><span> getHttpCode()
{
</span><span>return</span> <span>$this</span>-><span>httpCode;
}
} </span>
小帅帅心里十分不乐意，心里恨不得要揍揍于老大，但又不得不屈服他的淫威之下，只得答应说到：好的，我先回去琢磨琢磨一下。
小帅帅 从此郁闷了一天。 拿着天书式的武林秘籍去修炼去了。
现在 百度推广有精确、短语、广泛三种匹配方式，，一般来说黄金组合匹配方式是：广泛匹配+搜索词报告+否定关键词。流量来说的话就是 广泛>短语>精确啦，可以根据你们呢的实际情况进行设置！
如果要精确匹配，需要ABC都带引号。
