PHP count and seperate text from text file

Question

Let's say inside the text file is this information:

<Amanda> Hi there, how are you?
<Jack> Hi, im fine 
.
.
.
.
<Jack> see you later

I want to count the words each user have said the output should be for example like this

Amanda: 50
Jack: 40

First I want to not count the <Amanda> or <Jack> and next I want to count every words they said and insert it to variables Amanda and Jack

This is what I have done

    $usercount1 = 0;
    $usercount2 = 0;  

    //Opens a file in read mode  
    $file = fopen("logfile.txt", "r");  
    //Gets each line till end of file is reached  
    while (($line = fgets($file)) !== false) {  
        //Splits each line into words
        $words = explode(" ", $line);  
        $words = explode("<Amanda>", $line);  
        //Counts each word  
        $usercount1 = $usercount1 + count($words);  
    }

    while (($line = fgets($file)) !== false) {  
        //Splits each line into words  
        $words = explode(" ", $line);
        //Counts each word  
        $usercount2 = $usercount2 + count($words);  
    } 

Answer 1

I would go a more general approach. This way you can analyze all users. Using a blacklist, just exclude them.

• First go through all the lines and match for username and text.
• Rebuild data structure by iterating and counting up using a blacklist.

The blacklist is formatted like this, because finding keys is faster than finding values.

$input = <<<'_TEXT'
<Amanda> Hi there, how are you?
<Jack> Hi, im fine
<Jack> see you later
<John> Hello World, my friends!
<Daniel> Foo!
_TEXT;
preg_match_all('/^<([^>]+)>(.*?)$/m', $input, $matches);

$blacklist = ['Amanda' => 1, 'Jack' => 1];
$words = [];
foreach ($matches[2] as $index => $match) {
    $user = $matches[1][$index];
    if (isset($blacklist[$user])) {
        continue;
    }
    $words[$user] = ($words[$user] ?? 0) + str_word_count($match);
}
print_r($words);

Array
(
    [John] => 4
    [Daniel] => 1
)