使用PHP从文本中提取数字

I have this code

$link = file_get_contents("file.txt");
if(preg_match_all('/\b[0-9]{3}\s*[-]?\s*[0-9]{3}\s*[-]?\s*[0-9]{4}\b/', $link, $content, PREG_PATTERN_ORDER)){

$content = array_unique($content[0]);
foreach($content as $key=>$value)
{
    echo $value;
    echo "<br>";
}

}

It always print out this number 1477276084 even that number isnt in the text file

the content of the textfile is

Name: 
Phone: 1477276084
Name: 
Phone: 2958692011
Name: 
Phone: 2958692011
Name: 
Phone: 2958692011
Name: 
Phone: 9954129334
Name: 
Phone: 123-812-4181
Name: 
Phone: 609-182-5123
Name: 
Phone: 609-182-5123
Name: 
Phone: 609-182-5123
Name: 
Phone: 609-182-5123

I even tried to change the file.txt into website and still the number is there