In PHP, how to get an element using id?
P粉930448030
2023-08-23 00:09:38
<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,$msg);
echo 'Email inviata.';
}
?></pre>
<p><br /></p>
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PHP cannot access your DOM directly. PHP only runs on the server and simply receives requests and gives responses.
After submitting this form to its action page
./form.php, the values entered into the form will be stored in$_POSTwith the key name of itsnameAttributes. In your HTML code, add thenameattribute 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
nameinput tag and Taylor in thesurnameinput tag, I can get those values like this:In the
./form.phpfile:$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.To get the posted data from the submitted form, you can use
$_POST['fieldname']to achieve this.Just try the following and see what you get after the form is submitted.
Uncomment the two lines above, see what you get, and then comment them out again.
if( isset($_POST['name']) ) { $name = $_POST['name']; } if( isset($_POST['surname']) ) { $surname = $_POST['surname']; } if( isset($_POST['subject']) ) { $subject = $_POST['subject']; }