Ecek-ecek

Saya pernah denger ada tool milik spammer yang berguna untuk mencari alamat2 email yang banyak bertebaran di website2. Nah, dengan php ini, alamat email yang kita pasang di web, gak akan dibaca ama tool2 tersebut. Konsepnya sih cuman mengubah text ke image, ditambah fungsi base64 biar bisa jadi variabel dan gak kebaca ama robot pencari email.

Source emailtoimage.php:

<? $e=$_GET['e']; if(isset($e)){ $text=base64_decode($e); $jml=strlen($text); header("Content-type: image/png"); $lebar=($jml*6)+9; $im = @imagecreate($lebar, 17) or die("Cannot Initialize new GD image stream"); $background_color = imagecolorallocate($im, 200, 200, 200); $text_color = imagecolorallocate($im, 0, 0, 0); $border=$lebar-1; imagefilledrectangle($im, 0, 0, $border, 16, $background_color); imagestring($im, 2, 5, 2, $text, $text_color); imagepng($im); imagedestroy($im); } ?>

Sekalian buat html untuk generate base64_encode nya (emailtoimage.html)

<script> /** * * Base64 encode / decode * http://www.webtoolkit.info/ * **/ var Base64 = { // private property _keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=", // public method for encoding encode : function (input) { var output = ""; var chr1, chr2, chr3, enc1, enc2, enc3, enc4; var i = 0; // input = Base64._utf8_encode(input); while (i < input.length) { chr1 = input.charCodeAt(i++); chr2 = input.charCodeAt(i++); chr3 = input.charCodeAt(i++); enc1 = chr1 >> 2; enc2 = ((chr1 & 3) << 4) | (chr2 >> 4); enc3 = ((chr2 & 15) << 2) | (chr3 >> 6); enc4 = chr3 & 63; if (isNaN(chr2)) { enc3 = enc4 = 64; } else if (isNaN(chr3)) { enc4 = 64; } output = output + this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) + this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4); } return output; }, } function gambaremail(){ email=document.getElementById('email').value; cryptmail=(Base64.encode(email)); document.getElementById('hasil').innerHTML='<img src="emailtoimage.php?e='+cryptmail+'"><br><br>Code :<br><input size=100 onclick="this.select()" value="& lt;image src=\'http://ystat.net/emailtoimage.php?e='+cryptmail+'\'>"'; } </script> <div style="width:600px">Don't wanna give your email address that you put on website to the spammer, you can use this service, use image that can't be read by spammer collecting robot<br></div> <p>Insert you email address here :<br> <input id='email' size='50' onKeyDown="if(event.keyCode==13 ){gambaremail();}"><button onclick="gambaremail()">Create Image</button> <br><br> <div id='hasil'></div>

Contoh jadi :

Email to Image siap pakai