#7 - Email obfuscation

Data: 2018-05-05 12:00 - PHP

Simple email obfuscation to prevent scrapping by bots.

<?php
function obfuscate_email($email) {
    $fn = 'this.href=\'mailto:\'+atob(this.dataset.e.split(\'\').reverse().join(\'\'));this.removeAttribute(\'onmouseenter\');this.removeAttribute(\'onfocus\')';
    $email_obf_tokens = implode('<span style="display: none;">spam</span>', preg_split('/(@|[.])/', $email, -1, PREG_SPLIT_DELIM_CAPTURE));
    echo '<a href="#" data-e="', strrev(base64_encode($email)), '" onmouseenter="', $fn, '" onfocus="', $fn, '">', $email_obf_tokens, '</a>';
}

echo obfuscate_email('email@example.com');

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