手把手教你做关键词匹配项目（搜索引擎）---- 第十七天，教你做第十七天_PHP教程

手把手教你做关键词匹配项目（搜索引擎）---- 第十七天，教你做第十七天

第十七天

客串：屌丝的坑人表单神器

起点：手把手教你做关键词匹配项目（搜索引擎）---- 第一天

回顾：手把手教你做关键词匹配项目（搜索引擎）---- 第十六天

小帅帅去落实黑名单录入的任务的时候，他给小丁丁讲解了半天，小丁丁就托着下巴，看着小帅帅，做着崇拜的表情。

小帅帅感觉受打击了，跑到于老大那儿抱怨：于老大，我给小丁丁讲了半天，怎么装数据库客户端，怎么填黑名单，为什么要填都说明白了，小丁丁还是不懂，我真心受不了了。

于老大就安慰小帅帅说：我们先不急着落实这项任务把，我们先把初步的功能做出来，把整个架子搭好，输入个宝贝就能匹配出关键词，前期的话关键词肯定很多不正确，但是不要紧，我们再来教。

小帅帅：......

于老大接着说到：只要他们看到了结果，应该很容易懂的，到时他们只有崇拜你的份啦。好了，小帅帅开心点，一次的碰壁很正常，只要在这里面吸取到教训就好了。

小帅帅，心里虽然还有点不如意，不过没有刚开始那么气愤了。小帅帅答到：好吧，我先继续做功能先吧，我先去尝试做近义词的功能吧。

近义词范例：

　　1. XXL,加大,加大码<br />　　2. 外套,衣,衣服,外衣,上衣<br />　　3. 女款，女士，女生，女性<br /><br /><br />

考虑到某一个类目对于一些词的近义词有不同的定义，故而小帅帅把表结构设计成这样：

<span>CREATE</span> <span>TABLE</span><span> `category_linklist` (
   `cid` </span><span>BIGINT</span>(<span>20</span>) <span>DEFAULT</span> <span>NULL</span> COMMENT <span>'</span><span>类目ID</span><span>'</span><span>,
   `catmatch` </span><span>VARCHAR</span>(<span>50</span>) <span>CHARACTER</span> <span>SET</span> utf8 <span>DEFAULT</span> <span>NULL</span> COMMENT <span>'</span><span>类目名称</span><span>'</span><span>,   
   `word` </span><span>VARCHAR</span>(<span>255</span>) <span>CHARACTER</span> <span>SET</span> utf8 <span>DEFAULT</span> <span>NULL</span> COMMENT <span>'</span><span>关键词,用逗号分隔</span><span>'</span><span>,  
   `created` </span><span>DATETIME</span> <span>DEFAULT</span> <span>NULL</span> COMMENT <span>'</span><span>录入时间</span><span>'</span><span>,
 ) ENGINE</span><span>=</span>INNODB <span>DEFAULT</span> CHARSET<span>=</span>utf8 COLLATE<span>=</span>utf8_bi

小帅帅并把数据补了一些进去。

<span>INSERT</span> <span>INTO</span> category_linklist(cid,catmatch,word) <span>VALUES</span>("<span>50010850</span><span>","女装","XXL,加大,加大码");
</span><span>INSERT</span> <span>INTO</span> category_linklist(cid,catmatch,word) <span>VALUES</span>("<span>50010850</span><span>","女装","外套,衣,衣服,外衣,上衣");
</span><span>INSERT</span> <span>INTO</span> category_linklist(cid,catmatch,word) <span>VALUES</span>("<span>50010850</span><span>","女装","女款,女士,女生,女性");
#......</span>

小帅帅扩展了一个CharListHandle类来专门处理这些近义词.

代码如下：

<?<span>php

</span><span>class</span> LinklistCharListHandle <span>extends</span><span> CharListHandle {
    </span><span>public</span> <span>function</span> <span>exec</span><span>(){
        </span><span>$sql</span> = "select word from category_linklist where cid='<span>$this</span>->selectorItem->cid'"<span>;
        </span><span>$linklist</span> = DB::makeArray(<span>$sql</span><span>);
        </span><span>foreach</span>(<span>$linklist</span> <span>as</span> <span>$strWords</span><span>){
            </span><span>$words</span> = <span>explode</span>(",",<span>$strWords</span><span>);

            </span><span>$properties</span> = <span>$this</span>->selectorItem-><span>getProperties();
            </span><span>foreach</span>(<span>$properties</span> <span>as</span> <span>$property</span><span>){

                </span><span>$this</span>->charlist->addCore(<span>$property</span>-><span>value);
                </span><span>if</span>(<span>in_array</span>(<span>$property</span>->value,<span>$words</span><span>)){
                    </span><span>foreach</span>(<span>$words</span> <span>as</span> <span>$char</span><span>){
                        </span><span>$this</span>->charlist->addCore(<span>$char</span><span>);
                    }
                }
            }
        }
    }
}</span>

小帅帅又增加了SelectorItem获取属性数组的接口：

<span>class</span><span> SelectorItem {  

       </span><span>#</span><span>......</span>

    <span>public</span> <span>function</span><span> getProperties(){

        </span><span>$result</span> = <span>array</span><span>();
        </span><span>$properties</span> = <span>explode</span>(";",<span>$this</span>->item-><span>props_name);
        </span><span>foreach</span>(<span>$properties</span> <span>as</span> <span>$strProperty</span><span>){
            </span><span>$result</span>[] = self::createItemProperty(<span>explode</span>(":",<span>$strProperty</span><span>));
        }
       </span><span>return</span> <span>$result</span><span>;
    }

    </span><span>public</span> <span>static</span> <span>function</span> createItemProperty(<span>$propertyArr</span><span>){
        </span><span>$property</span> = <span>new</span><span> stdClass();
        </span><span>$property</span>->id = <span>$propertyArr</span>[0<span>];
        </span><span>$property</span>->fieldId = <span>$propertyArr</span>[1<span>];
        </span><span>$property</span>->name = <span>$propertyArr</span>[2<span>];
        </span><span>$property</span>->value = <span>$propertyArr</span>[3<span>];
        </span><span>return</span> <span>$property</span><span>;
    }

   </span><span>#</span><span>......</span>
}

Selector的轻松改动如下：

<span>class</span><span> Selector {

    </span><span>private</span> <span>static</span> <span>$charListHandle</span> = <span>array</span><span>(
        </span>"黑名单" => "BacklistCharListHandle",
        "近义词" => "LinklistCharListHandle"<span>
    );

    </span><span>#</span><span>......</span>
}

当小帅帅把这代码拿给于老大看的时候，于老大只是瞧了一下，就把小帅帅给批了。

小帅帅百思不得其解。

预知小帅帅为啥被批，请看下回分解。

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