How to format I/O data from script - php

Question

I was using a script to exclude a list of words from another list of keywords. I would like to change the format of the output. (I found the script on this website and I have made some modification.)
Example:
Phrase from outcome: my word
I would like to add quotes: "my word"
I was thinking that I should put the outcome in new-file.txt and after to rewrite it, but I do not understand how to capture the result. Please, kindly give me some tips. It's my first script :)
Here is the code:
<?php
$myfile = fopen("newfile1.txt", "w") or die("Unable to open file!");
// Open a file to write the changes - test
$file = file_get_contents("test-action-write-a-doc-small.txt");
// In small.txt there are words that will be excluded from the big list
$searchstrings = file_get_contents("test-action-write-a-doc-full.txt");
// From this list the script is excluding the words that are in small.txt
$breakstrings = explode(',',$searchstrings);
foreach ($breakstrings as $values){
if(!strpos($file, $values)) {
echo $values." = Not found;\n";
}
else {
echo $values." = Found; \n";
}
}
echo "<h1>Outcome:</h1>";
foreach ($breakstrings as $values){
if(!strpos($file, $values)) {
echo $values."\n";
}
}
fwrite($myfile, $values); // write the result in newfile1.txt - test
// a loop is missing?
fclose($myfile); // close newfile1.txt - test
?>
There is also a little mistake in the script. It works fine however before entering the list of words in test-action-write-a-doc-full.txt and in test-action-write-a-doc-small.txt I have to put a break for the first line otherwise it does not find the first word.
Example:
In test-action-write-a-doc-small.txt words:
pick, lol, file, cool,
In test-action-write-a-doc-full.txt wwords:
pick, bad, computer, lol, break, file.
Outcome:
Pick = Not found -- here is the mistake.
It happens if I do not put a break for the first line in .txt
lol = Found
file = Found
Thanks in advance for any help! :)

Answer 1

You can collect the accepted words in an array, and then glue all those array elements into one text, which you then write to the file. Like this:
echo "<h1>Outcome:</h1>";
// Build an array with accepted words
$keepWords = array();
foreach ($breakstrings as $values){
// remove white space surrounding word
$values = trim($values);
// compare with false, and skip empty strings
if ($values !== "" and false === strpos($file, $values)) {
// Add word to end of array, you can add quotes if you want
$keepWords[] = '"' . $values . '"';
}
}
// Glue all words together with commas
$keepText = implode(",", $keepWords);
// Write that to file
fwrite($myfile, $keepText);
Note that you should not write !strpos(..) but false === strpos(..) as explained in the docs.
Note also that this method of searching in $file will maybe give unexpected results. For instance, if you have "misery" in your $file string then the word "is" (if separated by commas in the original file) will be refused, as it is found in $file. You might want to review this.
Concerning the second problem
The fact that it does not work without first adding a line-break in your file leads me to think it is related to the Byte-Order Mark (BOM) that appears in the beginning of many UTF-8 encoded files. The problem and possible solutions are discussed here and elsewhere.
If indeed it is this problem, there are two solutions I would propose:
Use your text editor to save the file as UTF-8, but without BOM. For instance, notepad++ has this possibility in the encoding menu.
Or, add this to your code:
function removeBOM($str = "") {
if (substr($str, 0,3) == pack("CCC",0xef,0xbb,0xbf)) {
$str = substr($str, 3);
}
return $str;
}
and then wrap all your file_get_contents calls with that function, like this:
$file = removeBOM(file_get_contents("test-action-write-a-doc-small.txt"));
// In small.txt there are words that will be excluded from the big list
$searchstrings = removeBOM(file_get_contents("test-action-write-a-doc-full.txt"));
// From this list the script is excluding the words that are in small.txt
This will strip these funny bytes from the start of the string taken from the file.