查找两个字符串之间的多个差异

Question

我想找出两个字符串之间的差异。例如，如果

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

那么我应该能够得到名称 - 年龄和 ABC - xyz 的差异。

我想我可以使用编辑距离，但无法弄清楚。非常感谢任何帮助。

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);
?>