1. Install libiconv, which is a dependency of libdatrie
wget http://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.14.tar.gz tar zxvf libiconv-1.14.tar.gz cd libiconv-1.14 ./configure make make install
2. Install: libdatrie (http://linux.thai.net/~thep/datrie/datrie.html#Download)
tar zxf libdatrie-0.2.4.tar.gz cd libdatrie-0.2.4 ./configure --prefix=/usr/local make make install
Compilation error trietool.c:125: undefined reference to `libiconv'
The solution is: ./configure LDFLAGS=-L/usr/local/lib LIBS=-liconv
3. Install the trie_filter extension
Since the official trie_filter extension does not support Chinese very well, I found an extension on git that was rewritten on the official extension and has been tested without any problems
The installation method is as follows:
https://github.com/wulijun/php-ext-trie-filter Download the source code package here
phpize ./configure --with-php-config=/usr/local/bin/php-config make make install
4. Modify the php.ini file and add the trie_filter extension :extension=trie_filter.so, restart PHP.
Check phpinfo and find that the trie_filter extension is available, as shown in the following figure:
5. Generate a dictionary for word detection, because it is not included in the source code package downloaded above. It has a command to generate a dictionary, so you also need to download the official source code package
(https://code.google.com/p/as3chat/downloads/detail?name=trie_filter-2011-03-21.tar. gz)
tar zxf trie_filter-2011.03.21.tar.gz cd trie_filter-2011.03.21 gcc -o dpp dpp.c -ldatrie // 生成dpp命令用语编译词典 ./dpp words.txt words.dic //将words.txt 编译成trie_filter使用的词典 words.txt中每个词占一行
Error when generating dictionary: ./dpp: error while loading shared libraries: libdatrie.so.1: cannot open shared object file: No such file or directory
Solution : Execute
ldconfig
and then execute
./dpp words.txt words.dic
6. Test:
<!--?php /** * trie_filter 敏感词过滤示例 * **/ // 载入词典,成功返回一个 Trie_Filter 资源句柄,失败返回 NULL $file = trie_filter_load('./words.dic'); var_dump($file); $str1 = '今天利用trie_filter做敏感词过滤示例'; $str2 = '今天利用trie_filter做过滤示例'; // 检测文本中是否含有词典中定义的敏感词(假设敏感词设定为:‘敏感词’) $res1 = trie_filter_search_all($file, $str1); // 一次把所有的敏感词都检测出来 $res2 = trie_filter_search($file, $str2);// 每次只检测一个敏感词 var_dump($res1); echo "<br/-->"; var_dump($res2); trie_filter_free($file); //最后别忘记调用free
It is recommended to use php 5.3.3 or above version, I Using 5.3.3
The above is the content of using PHP extension trie_filter to filter Chinese sensitive words. For more related content, please pay attention to the PHP Chinese website (www.php.cn)!
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php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

在PHP中,可以利用implode()函数的第一个参数来设置没有分隔符,该函数的第一个参数用于规定数组元素之间放置的内容,默认是空字符串,也可将第一个参数设置为空,语法为“implode(数组)”或者“implode("",数组)”。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。


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