Compare php texts

Question

I need to develop/use a function to compare the text in two versions, to check what has been removed/added/maintained.

One version I upload an html file and extract the plain text, and the other version I get from my database, and also extract the plain text, for comparison.

Do you know of any such function to be used from github or any other source?

I have tried to use the function of this site http://code.iamkate.com/php/diff-implementation/ but they compare row by row, which is not functional, because in version 2, it is possible that a paragraph has been added, and if you compare row by row individually, from one addition, all next comparisons will indicate modification, which is not true.

Manually, the best tool I could find was https://www.diffchecker.com/ but they don’t have an api or open source.

Smart to have been clear enough.

Example of the output I want:

Answer 1

What you’re looking for is called text diff

Has some opiations:

PHP Inline Diff (uses PEAR text-diff)

PEAR Text_diff

Diff in Pure PHP

xdiff_string_diff()

Relacionados no Stackoverflow em ingles:

Highlight the Difference between two strings in PHP

Apply Diff in PHP

Need Help Optimizing php string Difference Function

Sources https://stackoverflow.com/questions/1125248/how-to-highlight-changes-difference-in-one-text-paragraph-from-the-other

Answer 2

I found the project https://github.com/chrisboulton/php-diff on Github that fits perfectly with my need. The example is very interesting. And the result is like this: