I have a input field as follows:
<input type="text" name="subject" id="subject" value="Car Loan">
I would like to get the input fields value Car Loan and assign it to a session. How do I do this using PHP or jQuery?
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If its a get request use, $_GET['subject'] or if its a post request use, $_POST['subject']
<form action="" method="post">
<input type="text" name="subject" id="subject" value="Car Loan">
<button type="submit" name="ok">OK</button>
</form>
<?php
if(isset($_POST['ok'])){
echo $_POST['subject'];
}
?>
function get_input_tags($html)
{
$post_data = array();
// a new dom object
$dom = new DomDocument;
//load the html into the object
$dom->loadHTML($html);
//discard white space
$dom->preserveWhiteSpace = false;
//all input tags as a list
$input_tags = $dom->getElementsByTagName('input');
//get all rows from the table
for ($i = 0; $i < $input_tags->length; $i++)
{
if( is_object($input_tags->item($i)) )
{
$name = $value = '';
$name_o = $input_tags->item($i)->attributes->getNamedItem('name');
if(is_object($name_o))
{
$name = $name_o->value;
$value_o = $input_tags->item($i)->attributes->getNamedItem('value');
if(is_object($value_o))
{
$value = $input_tags->item($i)->attributes->getNamedItem('value')->value;
}
$post_data[$name] = $value;
}
}
}
return $post_data;
}
error_reporting(~E_WARNING);
$html = file_get_contents("https://accounts.google.com/ServiceLoginAuth");
print_r(get_input_tags($html));
For global use, you may use:
$val = $_REQUEST['subject'];
and to add yo your session, simply
session_start();
$_SESSION['subject'] = $val;
And you dont need jQuery in this case.
Example of using PHP to get a value from a form:
Put this in foobar.php:
<html>
<body>
<form action="foobar_submit.php" method="post">
<input name="my_html_input_tag" value="PILLS HERE"/>
<input type="submit" name="my_form_submit_button"
value="Click here for penguins"/>
</form>
</body>
</html>
Read the above code so you understand what it is doing:
"foobar.php is an HTML document containing an HTML form. When the user presses the submit button inside the form, the form's action property is run: foobar_submit.php. The form will be submitted as a POST request. Inside the form is an input tag with the name "my_html_input_tag". It's default value is "PILLS HERE". That causes a text box to appear with text: 'PILLS HERE' on the browser. To the right is a submit button, when you click it, the browser url changes to foobar_submit.php and the below code is run.
Put this code in foobar_submit.php in the same directory as foobar.php:
<?php
echo $_POST['my_html_input_tag'];
echo "<br><br>";
print_r($_POST);
?>
Read the above code so you know what its doing:
The HTML form from above populated the $_POST superglobal with key/value pairs representing the html elements inside the form. The echo prints out the value by key: 'my_html_input_tag'. If the key is found, which it is, its value is returned: "PILLS HERE".
Then print_r prints out all the keys and values from $_POST so you can peek as to what else is in there.
The value of the input tag with name=my_html_input_tag was put into the $_POST and you retrieved it inside another PHP file.
You can get the value $value as :
$value = $_POST['subject'];
or:
$value = $_GET['subject']; ,depending upon the form method used.
session_start();
$_SESSION['subject'] = $value;
the value is assigned to session variable subject.
Source: Stackoverflow.com