[英]Allow only mails with @gmail.com ending
此Github 存储库用于将点 (.) 添加到 Gmail 地址,从而使用源自原始地址的随机地址在站点上多次注册。
该代码工作正常,但它适用于任何域(例如@house.com)
而且我需要将其限制为仅与 @gmail.com 一起使用(我在我的 HTML 中尝试过) <input type="email" pattern="^[a-zA-Z0-9]+@gmail\.com$">
但我更喜欢它是服务器端,我不知道该怎么做,我是 PHP 新手。
提前致谢。
PHP代码:
<?php
set_time_limit(0);
if(isset($_POST['email']))
{
$mail = explode('@', $_POST['email']);
$email = $mail[0];
$domain = '@'.$mail[1];
$email = ltrim($email);
$domain = ltrim($domain);
$email = rtrim($email);
$domain = rtrim($domain);
$email = stripslashes($email);
$domain = stripslashes($domain);
$email = htmlentities($email);
$domain = htmlentities($domain);
$res = addDOT($email);
echo '<div class="box"><div class="title">Total: '.sizeof($res).'</div><textarea type="text">';
foreach($res as $mcMails)
{
echo nl2br($mcMails.$domain).PHP_EOL;
}
echo '</textarea></div>';
}
function addDOT($str){
if(strlen($str) > 1)
{
$ca = preg_split("//",$str);
array_shift($ca);
array_pop($ca);
$head = array_shift($ca);
$res = addDOT(join('',$ca));
$result = array();
foreach($res as $val)
{
$result[] = $head . $val;
$result[] = $head . '.' .$val;
}
return $result;
}
return array($str);
}
?>
<?php
set_time_limit(0);
if(isset($_POST['email']))
{
if(isGmail($_POST['email'])){
$mail = explode('@', $_POST['email']);
$email = $mail[0];
$domain = '@'.$mail[1];
$email = ltrim($email);
$domain = ltrim($domain);
$email = rtrim($email);
$domain = rtrim($domain);
$email = stripslashes($email);
$domain = stripslashes($domain);
$email = htmlentities($email);
$domain = htmlentities($domain);
$res = addDOT($email);
echo '<div class="box"><div class="title">Total:'.sizeof($res).'</div><textarea type="text">';
foreach($res as $mcMails)
{
echo nl2br($mcMails.$domain).PHP_EOL;
}
echo '</textarea></div>';
}
}
function addDOT($str){
if(strlen($str) > 1)
{
$ca = preg_split("//",$str);
array_shift($ca);
array_pop($ca);
$head = array_shift($ca);
$res = addDOT(join('',$ca));
$result = array();
foreach($res as $val)
{
$result[] = $head . $val;
$result[] = $head . '.' .$val;
}
return $result;
}
return array($str);
}
/**
* Check if an email is a Gmail address
* @param string $email The email address to check
* @return boolean
*/
function isGmail($email) {
$email = trim($email); // in case there's any whitespace
return mb_substr($email, -10) === '@gmail.com';
}
?>
使用 PHP 8+,您可以使用str_ends_with() 。
function isGmail($email) {
return str_ends_with($email, '@gmail.com');
}
或以前的带有经典正则表达式的 PHP8+
function isGmail($email) {
return preg_match("/@gmail.com\$/", $email);
}
或带有负偏移量的 strpos
function isGmail($email) {
$pattern = '@gmail.com';
return (false !== strpos($email, $pattern, -strlen($pattern)));
}
固定的。 我通过放置第二个条件修改了代码的第一个 if:
if(isset($_POST['email']) and (substr($_POST['email'], -10) == '@gmail.com'))
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