how to get random characters in a variable on button click?

Question

here is my code that generates random characters

How can i get this random characters when i click my button 'submit' . and get that as a variable to save on database. please help

this is my button

<span class="input-group-btn">
     <button class="btn btn-info"  type="submit" name="submit">POST</button>
</span>

this generates random characters

<?php
$result = "";

$chars = "abcdefghijklmnopqrstuvwxyz0123456789";
$chararray = str_split($chars);
for($i = 0; $i < 7 ; $i++){
    $randitem = array_rand($chararray);
    $result .= "".$chararray[$randitem];
}

echo $result;
?>

i want to get that random character as a variable like $post_randomid = $_POST[random_id];

here just help me to get that random id when i click that button — True speaker
– True speaker, Commented Jan 2, 2017 at 15:41

JeanPaul98 · Accepted Answer · 2017-06-09 05:11:45Z

1

<?php
if(isset($_POST['submit'])) {
    if(isset($_POST['rand'])) {
        echo $_POST['rand'];
    }
}
?>
<form method="POST" >
    //this generates random characters
    <?php
    $result = "";
    $chars = "abcdefghijklmnopqrstuvwxyz0123456789";
    $chararray = str_split($chars);
    for($i = 0; $i < 7 ; $i++){
    $randitem = array_rand($chararray);
    $result .= "".$chararray[$randitem];
    }
    echo $result;
    // i want to get that random character as a variable like  $post_randomid =$_POST[random_id];
    ?>
    <input type="hidden" value="<?php echo $result;?>" name="rand" />
    //this is my button
    <span class="input-group-btn">
        <button class="btn btn-info"  type="submit" name="submit">POST</button>
    </span>
</form>

edited Jun 9, 2017 at 5:11

JeanPaul98

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answered Jan 2, 2017 at 15:52

Arun

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3 Comments

True speaker Over a year ago

thanks arun it works but can you help me to insert in database ?

True speaker Over a year ago

how can i insert that $result value in databese $insert ="insert into table (rand_id) values ('$result' ) ";

True speaker Over a year ago

my reputation is not 15 yet so i am unable to vote.... i will as soon as i reach their

EddieDemon · Accepted Answer · 2017-01-02 15:35:15Z

0

Send the value either in the session on the server or create a hidden input type on the client. The second option solves your question.

answered Jan 2, 2017 at 15:35

EddieDemon

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Comments

AZVR · Accepted Answer · 2017-01-02 16:04:34Z

0

    <?php
    $result = "";

    $chars = "abcdefghijklmnopqrstuvwxyz0123456789";
    $chararray = str_split($chars);
    for($i = 0; $i < 7 ; $i++){
            $randitem = array_rand($chararray);
            $result .= "".$chararray[$randitem];
    }
    ?>

    <form action="my_php_database_script.php" method="POST">
            <input name="chars" type="hidden" value="<?php echo $result; ?>" />
            <button type="submit" name="submit">POST</button>
    </form>

You could access your result with $_POST["chars"] in your script php (my_php_database_script.php) to save it in database.

If you want to do it asynchronously without leaving this page, you have to deal with AJAX.

answered Jan 2, 2017 at 16:04

AZVR

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