Comparing two text file, then remove matching sentences
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I have two text file, one contains a previously got content from a website, the other text file is updated (append) with new content.
Old text file:
This is a sunny day.
New text file:
I enjoy playing outside. This is a sunny day.
I want to cut out the part: "I enjoy playing outside."
Put it in a variable, do something with it.
Then the old text file should be like this:
I enjoy playing outside. This is a sunny day.
Yet again the new updated file just now looks like this:
Well, I met people, they were fun! I enjoy playing outside. This is a sunny day.
So this time I want to cut out: "Well, I met people, they were fun!"
Put it in a variable, do something with it.
$old_file = file_get_contents('old.txt');
$page = file_get_contents('https://www.website.com/');
$doc = new DOMDocument();
$doc->loadHTML($page);
$divs = $doc->getElementsByTagName('div');
foreach($divs as $div)
if ($div->getAttribute('class') === 'feels')
$news = preg_replace(array('/s2,/', '/[tn]/'), ' ', $div->nodeValue);
file_put_contents('new.txt', $news);
Now I have (old) content in old.txt and I have $news variable with updated content, if I have a $diff variable which contains the difference of the two text thats enough for me.
$diff= str_replace($old_file , '', $news);
not working...
Thanks
php
asked Nov 11 at 15:00
Tamás Gyetvai
12
add a comment |
up vote
0
down vote
favorite
I have two text file, one contains a previously got content from a website, the other text file is updated (append) with new content.
Old text file:
This is a sunny day.
New text file:
I enjoy playing outside. This is a sunny day.
I want to cut out the part: "I enjoy playing outside."
Put it in a variable, do something with it.
Then the old text file should be like this:
I enjoy playing outside. This is a sunny day.
Yet again the new updated file just now looks like this:
Well, I met people, they were fun! I enjoy playing outside. This is a sunny day.
So this time I want to cut out: "Well, I met people, they were fun!"
Put it in a variable, do something with it.
$old_file = file_get_contents('old.txt');
$page = file_get_contents('https://www.website.com/');
$doc = new DOMDocument();
$doc->loadHTML($page);
$divs = $doc->getElementsByTagName('div');
foreach($divs as $div)
if ($div->getAttribute('class') === 'feels')
$news = preg_replace(array('/s2,/', '/[tn]/'), ' ', $div->nodeValue);
file_put_contents('new.txt', $news);
Now I have (old) content in old.txt and I have $news variable with updated content, if I have a $diff variable which contains the difference of the two text thats enough for me.
$diff= str_replace($old_file , '', $news);
not working...
Thanks
php
asked Nov 11 at 15:00
Tamás Gyetvai
12
Since you are using the old file as your search parameter, this can only work the way you describe if the change is exactly at the beginning or end of the file... If the sentence, or even a comma, is added in the middle,str_replacewill not match your old file. For any real world scenario, this won't work. Assuming you are really only looking for additional as granular as sentences, you could break the file down into an array of sentences, and then try to match them against a stirred list of sentences.. once again, any change to a sentence will be a whole new sentence.
– bluejack
Nov 11 at 15:15
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I have two text file, one contains a previously got content from a website, the other text file is updated (append) with new content.
Old text file:
This is a sunny day.
New text file:
I enjoy playing outside. This is a sunny day.
I want to cut out the part: "I enjoy playing outside."
Put it in a variable, do something with it.
Then the old text file should be like this:
I enjoy playing outside. This is a sunny day.
Yet again the new updated file just now looks like this:
Well, I met people, they were fun! I enjoy playing outside. This is a sunny day.
So this time I want to cut out: "Well, I met people, they were fun!"
Put it in a variable, do something with it.
$old_file = file_get_contents('old.txt');
$page = file_get_contents('https://www.website.com/');
$doc = new DOMDocument();
$doc->loadHTML($page);
$divs = $doc->getElementsByTagName('div');
foreach($divs as $div)
if ($div->getAttribute('class') === 'feels')
$news = preg_replace(array('/s2,/', '/[tn]/'), ' ', $div->nodeValue);
file_put_contents('new.txt', $news);
Now I have (old) content in old.txt and I have $news variable with updated content, if I have a $diff variable which contains the difference of the two text thats enough for me.
$diff= str_replace($old_file , '', $news);
not working...
Thanks
php
asked Nov 11 at 15:00
Tamás Gyetvai
12
I have two text file, one contains a previously got content from a website, the other text file is updated (append) with new content.
Old text file:
This is a sunny day.
New text file:
I enjoy playing outside. This is a sunny day.
I want to cut out the part: "I enjoy playing outside."
Put it in a variable, do something with it.
Then the old text file should be like this:
I enjoy playing outside. This is a sunny day.
Yet again the new updated file just now looks like this:
Well, I met people, they were fun! I enjoy playing outside. This is a sunny day.
So this time I want to cut out: "Well, I met people, they were fun!"
Put it in a variable, do something with it.
$old_file = file_get_contents('old.txt');
$page = file_get_contents('https://www.website.com/');
$doc = new DOMDocument();
$doc->loadHTML($page);
$divs = $doc->getElementsByTagName('div');
foreach($divs as $div)
if ($div->getAttribute('class') === 'feels')
$news = preg_replace(array('/s2,/', '/[tn]/'), ' ', $div->nodeValue);
file_put_contents('new.txt', $news);
Now I have (old) content in old.txt and I have $news variable with updated content, if I have a $diff variable which contains the difference of the two text thats enough for me.
$diff= str_replace($old_file , '', $news);
not working...
Thanks
php
php
asked Nov 11 at 15:00
Tamás Gyetvai
12
asked Nov 11 at 15:00
Tamás Gyetvai
12
edited Nov 11 at 15:05
asked Nov 11 at 15:00
Tamás Gyetvai
12
asked Nov 11 at 15:00
Tamás Gyetvai
12
asked Nov 11 at 15:00
Tamás Gyetvai
12
12
Since you are using the old file as your search parameter, this can only work the way you describe if the change is exactly at the beginning or end of the file... If the sentence, or even a comma, is added in the middle,str_replacewill not match your old file. For any real world scenario, this won't work. Assuming you are really only looking for additional as granular as sentences, you could break the file down into an array of sentences, and then try to match them against a stirred list of sentences.. once again, any change to a sentence will be a whole new sentence.
– bluejack
Nov 11 at 15:15
add a comment |
Since you are using the old file as your search parameter, this can only work the way you describe if the change is exactly at the beginning or end of the file... If the sentence, or even a comma, is added in the middle,str_replacewill not match your old file. For any real world scenario, this won't work. Assuming you are really only looking for additional as granular as sentences, you could break the file down into an array of sentences, and then try to match them against a stirred list of sentences.. once again, any change to a sentence will be a whole new sentence.
– bluejack
Nov 11 at 15:15
Since you are using the old file as your search parameter, this can only work the way you describe if the change is exactly at the beginning or end of the file... If the sentence, or even a comma, is added in the middle,
str_replace will not match your old file. For any real world scenario, this won't work. Assuming you are really only looking for additional as granular as sentences, you could break the file down into an array of sentences, and then try to match them against a stirred list of sentences.. once again, any change to a sentence will be a whole new sentence.– bluejack
Nov 11 at 15:15
Since you are using the old file as your search parameter, this can only work the way you describe if the change is exactly at the beginning or end of the file... If the sentence, or even a comma, is added in the middle,
str_replace will not match your old file. For any real world scenario, this won't work. Assuming you are really only looking for additional as granular as sentences, you could break the file down into an array of sentences, and then try to match them against a stirred list of sentences.. once again, any change to a sentence will be a whole new sentence.– bluejack
Nov 11 at 15:15
add a comment |
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Since you are using the old file as your search parameter, this can only work the way you describe if the change is exactly at the beginning or end of the file... If the sentence, or even a comma, is added in the middle,
str_replacewill not match your old file. For any real world scenario, this won't work. Assuming you are really only looking for additional as granular as sentences, you could break the file down into an array of sentences, and then try to match them against a stirred list of sentences.. once again, any change to a sentence will be a whole new sentence.– bluejack
Nov 11 at 15:15