Automatic Email Address Protection PHP / JavaScript
It is important to protect email addresses on websites from being harvested by spambots.
"Email spambots collect e-mail addresses from the Internet in order to build mailing lists for sending unsolicited e-mail, also known as spam. Such spambots are web crawlers that can gather e-mail addresses from Web sites, newsgroups, special-interest group (SIG) postings, and chat-room conversations. Because e-mail addresses have a distinctive format, spambots are easy to write. A number of legislators in the U.S. are reported to be devising laws that would outlaw the spambot." – Wikipedia
This is my method for automatically detecting email addresses and replacing them with a javascript that will disguise them from spambots. The script works in two stages one in javascript and the other in php.
First the javascript function that outputs the mailto link:
function sb_email(user,site){ document.write('<a href=\"mailto:' + user + '@' + site + '\">'); document.write(user + '@' + site + '<\/a>'); }
The function has 2 parameters "user" and "site", which are the two parts of the email address either side of the "@". This function can be called like so:
sb_email('joe','bloggs.com');
The second part is the php functions that recognise email addresses and replace them with the javascript function to disguise them:
//function to output the js function create_js ($matches){ $parts = explode ('@', substr ($matches[0], 1)); if(substr($parts[1],-1)=='.'){$parts[1]=substr($parts[1],0,-1); $parts[2]='.';} $str = $matches[1].'<script language="JavaScript" type="text/javascript">'; $str .= 'sb_email("'.$parts[0].'", "'.$parts[1].'");'; $str .= '</script>'.$parts[2]; return $str; } $js_callback = "create_js "; //function to recognise emails function email_protect($text){ global $js_callback; $replace = '/([> ])[A-Z0-9._-]+@[A-Z0-9][A-Z0-9.-]{0,61}[A-Z0-9]\.[A-Z.]{2,6}/i'; $output = preg_replace_callback($replace, $js_callback, $text); return $output; }
The email_protect php function can be called on any text string like so:
echo email_protect($text);
It will automatically replace any email addresses in the text with the javascript, therefore hiding them from spambots.
Excellent, excellent, excellent! spectacular! stupendous!
Was exactly what I was looking for.
And does exactly what you said it would do!
Can’t say that about many other things I’ve downloaded - including stuff I’ve paid for!
Good show!
Great tool - well done. One issue however: how can I prevent my video from repeating / looping continuiously. I have tried setting &loop=false as part of passing the swf filename and I have set it in the calling code as well but it ignores them. See the code below:
I have the same problem as Wayne Moran. I would like the flash to run only once, as the constant repeating would detract from the sight and prevent the point of the flash from being made.
Works perfectly… Amazingly simple…see http://www.hotmix.org