查找两个字符串之间的多个区别

Question

我想查找两个字符串之间的差异。例如，如果

line1 = "My name is ABC" 
line2 = "My age is xyz" 

然后，我应该能够得到名称 - 年龄和ABC - xyz的差异。

我想我可以使用Levenshtein距离，但无法弄清楚。任何帮助是极大的赞赏。

Answer 1

<?php 
$line1 = "My name is ABC"; 
$line2 = "My age is xyz"; 

$matchlen = strspn($line1, $line2); 

// remove 1st non-matching char 
$same = substr($line1, 0, $matchlen - 1); 

// include 1st non-matching char 
$diff = substr($line2, $matchlen - 1); 

printf("Same: [%s]\nDiff: [%s]", $same, $diff); 
?>