SampleExamV1-2Email_Censorship

<?php
function endsWith($email, $blackListItem)
{
    $length = strlen($blackListItem);
    if ($length == 0) {
        return true;
    }

    return (substr($email, -$length) === $blackListItem);
}

//$text = $_GET['text'];
//$blacklist = $_GET['blacklist'];

$text  = "Hi, I'm an air-conditioner technician, so if you need any assistance you can contact me
at
[email protected]
 . Secondary email:
[email protected]
 or
at
[email protected]
 OR
[email protected]
";
$blacklist = "*.bg
            [email protected]
            *.com";

$blackListItems = preg_split("/[\*\s,]+/", $blacklist, -1, PREG_SPLIT_NO_EMPTY);


preg_match_all("/[0-9A-Za-z+_-]+\@[0-9A-Za-z-]+\.[0-9A-Za-z-\.]+/" , $text, $matches);

foreach ($matches[0] as $matchArr) {

    foreach ($blackListItems as $blackListItem) {

        if (endsWith($matchArr, $blackListItem)) {

            $matchReplKeys[] = $matchArr;
        }
    }
}
foreach ($matchReplKeys as $matchReplKey) {
    $asterix='';
    for ($i=0; $i<strlen($matchReplKey); $i++ ) {
        $asterix .= "*";
    }

    $text = str_replace($matchReplKey, $asterix, $text);
}

preg_match_all("/[0-9A-Za-z+_-]+\@[0-9A-Za-z-]+\.[0-9A-Za-z-\.]+/" , $text, $validEmails);

foreach ($validEmails[0] as $validEmail) {

    $mailToTag = '<a href="mailto:'.$validEmail.'">'.$validEmail.'</a>';
    $text = str_replace($validEmail, $mailToTag, $text);

}
echo "<p>".$text."</p>";