PHP similar_text string similarity comparison function

PHP provides a rarely used similar_text function, but this function is very useful for comparing two strings and returning the percentage of similarity. The following is how to use the similar_text () function:

similar_text($string1, $string2, $percent); 
//使用此函数后，我们从变量$percent 中获取刚比较的两个字符串的相似度百分比

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