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fackz on 02/02/10

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Last Edited at 02/02/10 06:37am

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php hide email function

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PHP encrypts your E-mail address and generates the javascript that decrypts it. Most bots and spiders can't execute javascript and that is what makes this work.

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<?php
function hide_email($email) { $character_set = '+-.0123456789@ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz'; $key = str_shuffle($character_set); $cipher_text = ''; $id = 'e'.rand(1,999999999); for ($i=0;$i<strlen($email);$i+=1) $cipher_text.= $key[strpos($character_set,$email[$i])]; $script = 'var a="'.$key.'";var b=a.split("").sort().join("");var c="'.$cipher_text.'";var d="";'; $script.= 'for(var e=0;e<c.length;e++)d+=b.charAt(a.indexOf(c.charAt(e)));'; $script.= 'document.getElementById("'.$id.'").innerHTML="<a href=\\"mailto:"+d+"\\">"+d+"</a>"'; $script = "eval(\"".str_replace(array("\\",'"'),array("\\\\",'\"'), $script)."\")"; $script = '<script type="text/javascript">/*<![CDATA[*/'.$script.'/*]]>*/</script>'; return '<span id="'.$id.'">[javascript protected email address]</span>'.$script; } 
?>
 
//////////// USAGE ////////////
 
This is the PHP code you write where you want the E-mail address on your web page.
 
<?php echo hide_email('[email protected]'); ?>
 
This is what the E-mail address will look like for the visitor of your web page.
 
<span id="e401621484">[javascript protected email address]</span><script type="text/javascript">/*<![CDATA[*/eval("var a=\"4taVs.lchvwRT8DJFqzfejbE5QXM_-irgWkSHAPmU+d1I32xKZByoC@GYNL7pnu90O6\";var b=a.split(\"\").sort().join(\"\");var c=\"p37p8p37pa1GC\";var d=\"\";for(var e=0;e<c.length;e++)d+=b.charAt(a.indexOf(c.charAt(e)));document.getElementById(\"e401621484\").innerHTML=\"<a href=\\\"mailto:\"+d+\"\\\">\"+d+\"</a>\"")/*]]>*/</script>