Revision: 57595
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at June 2, 2012 14:35 by thewickedchemist
Initial Code
<?php
function validateEmail($email)
{
$isValid = true;
$atIndex = strrpos($email, "@");
if (is_bool($atIndex) && !$atIndex)
{
$isValid = false;
}
else
{
$domain = substr($email, $atIndex + 1);
$local = substr($email, 0, $atIndex);
$localLen = strlen($local);
$domainLen = strlen($domain);
if ($localLen < 1 || $localLen > 64)
{
$isValid = false;
}
else if ($domainLen < 1 || $domainLen > 255)
{
$isValid = false;
}
else if ($local[0] == '.' || $local[$localLen - 1] == '.')
{
$isValid = false;
}
else if (preg_match('/\\.\\./', $local))
{
$isValid = false;
}
else if (!preg_match('/^[A-Za-z0-9\\-\\.]+$/', $domain))
{
$isValid = false;
}
else if (preg_match('/\\.\\./', $domain))
{
$isValid = false;
}
else if (!preg_match('/^(\\\\.|[A-Za-z0-9!#%&`_=\\/$\'*+?^{}|~.-])+$/', str_replace("\\\\", "", $local)))
{
if (!preg_match('/^"(\\\\"|[^"])+"$/', str_replace("\\\\", "", $local)))
{
$isValid = false;
}
}
if ($isValid && !(checkdnsrr($domain, "MX") || checkdnsrr($domain, "A")))
{
$isValid = false;
}
}
return $isValid;
}
?>
Initial URL
Initial Description
Checks for fake DNS as well as utilizes regex functions to check the string for proper length & characters.
Initial Title
Ultimate Email Validation PHP Function
Initial Tags
email, php
Initial Language
PHP