How to implement synonym replacement in php

How to implement synonym replacement in php: first create a PHP sample file; then define a "strtr_words" method; then obtain the vocabulary library through the "file_get_contents" function; finally implement synonym replacement through "explode" and other function methods. Can.

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php implements SEO pseudo-original synonym replacement function

Recently, I discussed with a friend the SEO pseudo-original issue of PHP regarding synonym replacement. I wrote the following function and made a plug-in for emlog.

function strtr_words($str)
{
$words=array();
$content = file_get_contents(‘words.txt’);//词库
$content = str_replace( “\r”, “”,$content); //去掉换行符(以便兼容Linux主机)
$content = preg_split(‘/\n/’, $content, -1, PREG_SPLIT_NO_EMPTY);//\n分割字符
foreach($content as $k=>$v)
{
if($k!=0)
{
$str_data = explode(‘→’,$v);//关键词分割符
$words+=array(“$str_data[0]“=>”$str_data[1]“);
}
}
return strtr($str,$words);//返回结果
}

The vocabulary words.txt format is as follows:

恳求→哀求
悲悼→哀伤
悲痛→哀思
悲伤→哀痛
顺序→挨次
受饿→挨饿
靠拢→挨近

Note that each line contains a set of synonyms, separated by "→".

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