php从文本文件中读取并提取数据

This is to upload and print a text file. Now, this txt file contains details of people booking and comes via email and looks something like this:

some text (always the same)
= ================
text again
name   : Mr F Someone
address: Somewhere
...
...
more same text

The problem is there are no delimiters. and I want to grab the data like "Mr", "F", "Someone",... and then put each one of them in an input field of a form. I tried something like this:

    $section_a = file_get_contents($up_folder, NULL, NULL, 508, 2);
    echo '<input type="text" name="Title" value="'.$section_a.'">';

but if it is "Miss" instead of "Mr" then it is a problem, same as the length of the name and so on. And there is more than one "booking" in a file. So, is there a way of getting the details of each booking out of the file to put each time in a form?

<?php
    if($_FILES['userfile']['error'] > 0){
        echo 'Houston, we have a problem: ';
        switch($_FILES['userfile']['error'])
        {    
            case 1: echo 'file too big'; break;
            case 2: echo 'file too big'; break;
            case 3: echo 'incomplete upload'; break;
            case 4: echo 'uplad error'; break;
        }
        exit;
    }
    if($_FILES['userfile']['type'] != 'text/plain'){
        echo 'Ooh noes! File is not plain text dude!';
        exit;
    }
    $up_folder = 'upload/'.$_FILES['userfile']['name'];
    if(is_uploaded_file($_FILES['userfile']['tmp_name'])){
        if(!move_uploaded_file($_FILES['userfile']['tmp_name'], $up_folder)){
            echo 'cannot move file';
            exit;
        }
    }
    else{
        echo 'error: ';
        echo $_FILES['userfile']['name'];
        exit;
    }
    echo 'file upload successful<br>';

    $fp = fopen($up_folder, 'r');
    $contents = fread($fp, filesize($up_folder));
    fclose($fp);

    $contents = strip_tags($contents); 
    $fp = fopen($upfile, 'w');
    fwrite($fp, $contents);
    fclose($fp);

    echo 'Uploaded file content: <br> <br>';
    echo $contents;
?>

$fetch = ['name','address'];
$output = [];

$fp = fopen($file, 'r');
while(!feof($fp) && count($output) !== count($fetch)) {
    $line = fgets($line);
    list($prefix, $value) = explode(':', $line, 2);
    $prefix = strtolower(trim($prefix));
    foreach($fetch as $f) {
        if($prefix === $f) {
            $output[$f] = trim($value);
            break;
        }
    }
}
fclose($fp);

print_r($output);