Equivalent of Alert() and Prompt() in PHP

Question

In JavaScript, we have Alert() and Prompt() which open up a popup box for the user.

Is there an equivalent for PHP? $Get_['asdf'] is one way to get user input... any others?

Also, one more question. Is it a requirement that PHP always be executed all at once? Or can it be like JavaScript, where it waits for the user input (e.g. popup box), then executes the rest of the code after that.

Take a look at here: http://programmers.stackexchange.com/questions/171203/what-are-the-differences-between-server-side-and-client-side-programming — Cristik, May 22 '15 at 05:32

score 9 · Accepted Answer · answered May 22 '15 at 05:40

PHP is a server side language, it can't do alert messages on the client side. But you can use javascript within the php to do the alert.

<script type="text/javascript">
window.alert("Hi There, I am the Alert Box!")
</script>

For Prompt you can do something like this -

<?php

    //prompt function
    function prompt($prompt_msg){
        echo("<script type='text/javascript'> var answer = prompt('".$prompt_msg."'); </script>");

        $answer = "<script type='text/javascript'> document.write(answer); </script>";
        return($answer);
    }

    //program
    $prompt_msg = "Please type your name.";
    $name = prompt($prompt_msg);

    $output_msg = "Hello there ".$name."!";
    echo($output_msg);

?>

I tried using the alert for php which you gave, inside a .php page called using AJAX. For some reason, it wouldn't work, even though I put it inside an `echo " ";`. — aravk33, Sep 29 '17 at 11:56
if you echo it in the `.php` that is being called via `ajax` it'll come back as the `response`. It won't just echo it, or throw an alert. You then would have to do the alert in the `ajax` caller. — jpgerb, Oct 28 '22 at 19:56

score 2 · Answer 2 · answered May 22 '15 at 05:32

2

Nope, there is no equivalent. All php is executed on the server-side only. Unless you're using it at the command-line, which I doubt.

It also cannot wait for user input like javascript, like you wanted. Sorry. You'll have to use ajax for that.

answered May 22 '15 at 05:32

Joel Hinz

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Evanh Shumakov · Answer 3 · 2019-11-22T08:38:57.617

2

That's it:

$shouldProceed = readline('Do you wanna proceed?(y/n): ');
if (strtolower(trim($shouldProceed)) == 'n') exit;
proceed();

edited Nov 22 '19 at 08:38

answered Aug 08 '19 at 12:03

Evanh Shumakov

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11

In JS Window.prompt() displays a dialog with an optional message prompting the user to input some text, as well readline() in PHP. Just one main difference: JS interpretates in your browser so dialog displays in browser, PHP interpretates in "PHP interpretator" (do not know how it names) so a dialog will be displayed in your command line if you proceed your code in it. – Evanh Shumakov Aug 08 '19 at 14:36

score 1 · Answer 4 · edited Mar 12 '22 at 04:19

1

PHP can run anywhere there is a php interpreter available, that is, on a web server, or as a command line shell script. In the latter case , you could use ...

readline ( "Press Enter to continue, or Ctrl+C to cancel." );

edited Mar 12 '22 at 04:19

Suraj Rao

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answered Mar 12 '22 at 03:50

Roland Heymanns

11
1

Equivalent of Alert() and Prompt() in PHP

4 Answers4

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