How To Add A Javascript Alert With A Php Script?

let's say i have an input form, wherein, it's use for an email address. this form is part of a long form so i use an alert box instead when other inputs got errors....my question n

Solution 1:

PHP is server-side language. you can output it to user with

echo"<script>alert('".mysql_real_escape_string($errormessage)."');</script>";

or you can write your own function

functionalert($a){
    echo"<script>alert('".mysql_real_escape_string($a)."');</script>";

}

alert("test");

Solution 2:

You can echo any kind of javascript with PHP. The question is however, are you sure you want to do this? You can also do like this:

<?phpif(emailExists): ?><script>alert('Email exists!')</script><?phpendif; ?>

But you could also use jQuery and Ajax requests to check if email exists with ajax when user has typed the email.

Solution 3:

echo '<script>alert("ssss");</script>' ; just put it within echo it will work that way