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In PHP, how to get an element using id?
P粉930448030
P粉930448030 2023-08-23 00:09:38
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<p>I would like to add an email sending system to my website. </p> <p>The problem is when I try to assign a variable text from my HTML file, it doesn't happen. I want the content in the variable should be written in the message of the email. This is my code: </p> <pre class="brush:php;toolbar:false;"><html> <?php include('form.php'); ?> <head> </head> <body> <form action="./form.php" method="post"> <div name="name"><input type="text" id="name"></div> <div name="surname"><input type="text" id="surname"></div> <div name="message"><textarea rows="4" cols="50" id="message">Inserisci qui il tuo testo.</textarea></div> <div name="subject"><select id="subject"> <option selected="selected">--Inserisci Oggetto--</option> <option>Registrazione al sito</option> <option>Recupero credenziali</option> </select></div> <input type="submit" value="Invia penzolini"/> <input type="hidden" name="button_pressed" value="1" /> </form> </body> </html> <?php $dochtml = new domDocument(); $dochtml->loadHTML('index.html'); if(isset($_POST['button_pressed'])) { //Get the name $name = $dochtml->getElementById('name'); //Get the last name $surname = $dochtml->getElementById('surname'); //Get the email subject $subject = $dochtml->getElementById('subject'); //Message <70 characters $msg = "Inviato da" . ' ' . $name . $surname . ' ' . $dochtml->getElementById('message'); // /n=space // send email mail("panzersit@gmail.com",$subject,$msg); echo 'Email inviata.'; } ?></pre> <p><br /></p>
P粉930448030
P粉930448030

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P粉863295057
P粉8632950572023-08-23 20:54:49 2 floor

PHP cannot access your DOM directly. PHP only runs on the server and simply receives requests and gives responses.

After submitting this form to its action page ./form.php, the values ​​entered into the form will be stored in $_POST with the key name of its name Attributes. In your HTML code, add the name attribute to the input tag like this: 

<form action="./form.php" method="post">
    <div name="name"><input type="text" name="name"></div>
    <div name="surname"><input type="text" name="surname"></div>
</form>

Now, if I submit this form and enter Zachary in the name input tag and Taylor in the surname input tag, I can get those values ​​like this:

In the ./form.php file:

$name = $_POST['name']; // "Zachary"

$surname = $_POST['surname']; // "Taylor"

To verify that there was any input first, use: isset($_POST['key']), because sometimes the input value is not even sent to the action page when it is null. This prevents PHP from throwing an error when referencing a non-existent $_POST key.

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P粉163951336
P粉1639513362023-08-23 11:56:52 1 floor

To get the posted data from the submitted form, you can use $_POST['fieldname'] to achieve this.

Just try the following and see what you get after the form is submitted. 

//echo "<pre>";
//print_r($_POST);

Uncomment the two lines above, see what you get, and then comment them out again. 

if( isset($_POST['name']) )
{
    $name = $_POST['name'];
}
if( isset($_POST['surname']) )
{
    $surname = $_POST['surname'];
}
if( isset($_POST['subject']) )
{
    $subject = $_POST['subject'];
}
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