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我想驗證電子郵件,它也得到驗證,但下面的PHP代碼插入價值數據庫,即使用戶沒有輸入有效的電子郵件。如果有人能幫助我,我是初學者。提前致謝。電子郵件驗證和提交價值數據庫
<script language="javascript">
function checkEmail() {
var email = document.getElementById('txtEmail');
var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
if (!filter.test(email.value)) {
alert('Please provide a valid email address');
email.focus;
return false;
}
}
</script>
<?php
error_reporting(E_ALL);
ini_set("display_errors", "On");
$con=mysqli_connect("localhost","root","","xyz");
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
// print_r($_POST);
if(isset($_POST['submit'])){
$user=$_POST['user'];
echo $user;
$query = "INSERT INTO Newsletter VALUES('$user')";
if(mysqli_query($con, $query)){
echo "inserted";
} else {
echo "fail";
}
}
?>
<form action="" method="post">
<div>
<input name="user" id="txtEmail" type="text" class="input-field"
placeholder="Send us an email of your requirements and we will get back to you!!"></div>
<div>
<input name="submit" type="submit" class="input-button" value="subscribe" onclick='Javascript:checkEmail();'>
</div>
</form>
您正在使用的javascript:必須調用表單提交檢查。 PHP不涉及這一點。發佈你的「表單」代碼。 – Aerendir
所以這個問題不是關於PHP和MySQL?這聽起來像是你的JavaScript的問題。順便說一下,我也推薦後端驗證。前端驗證非常適合可用性,但後端驗證對於確保數據有效性仍然很重要。 – Tristan
'email.focus;',它是'focus()' – Ramanlfc