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Editorial Team
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Asked: 2026-06-17T21:00:00+00:00

I used a PHP script over 9 years ago. After updating PHP version to

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I used a PHP script over 9 years ago.

After updating PHP version to latest stable one (PHP 5.4.1.1), my script no longer works.

I found the problem area, Can anyone help me to convert this old PHP code to latest PHP 5.4.11.

if ((strlen($user_name)<$nick_min_length) or (strlen($user_name)>$nick_max_length)) {
    $error_text ="$w_incorrect_nick<br><a href=\"index.php\">$w_try_again</a>";
    include($file_path."designes/".$design."/error_page.php");
    exit;
}
if (ereg("[^".$nick_available_chars."]", $user_name)) {
    $error_text ="$w_incorrect_nick<br><a href=\"index.php\">$w_try_again</a>";
    include($file_path."designes/".$design."/error_page.php");
    exit;
}
if (strtolower($user_name) == strtolower(strip_tags($w_rob_name))) {
    $error_text ="$w_incorrect_nick<br><a href=\"index.php\">$w_try_again</a>";
    include($file_path."designes/".$design."/error_page.php");
    exit;
}
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1 Answer

  1. Editorial Team
    if (ereg("[^".$nick_available_chars."]", $user_name)) {

    should be:

    if (preg_match("/[^" . preg_quote($nick_available_chars) . "]/", $user_name)) {

    ereg() is deprecated and should not be used. Also with preg_match() you want to make sure special characters within your variable are properly escaped so you would use preg_quote() and the regex would need delimiters, I put / in this case.

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