How can I get form data to php via jquery - php

Question

I have some validation code something like this -
if ($('#address').val()) {
if ($('#address').val().length > 60 || $('#address').val().length < 5) {
errorMessage += "Length of Your Address must be between 5 and 60.\n";
valid = false;
} else {
var rege = /^[a-zA-Z]([0-9a-z_\s])+$/i;
if(!rege.test($('#address').val())){
errorMessage += "Please enter Valid Address.\n";
valid = false;
} else {
var address = $('#address').val();
//alert ('My address is : ' + address);
}
}
} else {
errorMessage += "please enter your address\n";
valid = false;
}
My problem is how I get this value to php. My value have here - var address = $('#address').val();
I need to check this value again in PHP and need to echo the value on the same page.
I use it something like this -
if( !valid && errorMessage.length > 0){
alert(errorMessage);
} else {
$.ajax({
type: "POST", // HTTP method POST or GET
url: "demo2.php", //Where to make Ajax calls
data: {
myname: name,
myaddress: address,
myemail: email
}
});
}
demo2.php page is the same page which my form have.
Above of my page I tried to print $_POST array but nothing display there.
echo '<pre>', print_r( $_POST).'</pre>';
Hope someone will help me.
Thank you.

Answer 1

First put a check in demo2.php for if POST is set
if( isset($_POST['myaddress']) ) {
// your echo statement here
}
Then you just need to add some code to the jquery handle the response.
if( !valid && errorMessage.length > 0){
alert(errorMessage);
} else {
$.ajax({
type: "POST", // HTTP method POST or GET
url: "demo2.php", //Where to make Ajax calls
data: {
myname: name,
myaddress: address,
myemail: email
}
}).done(function(response) {
$('#address-display-div').html(response);
});
}
replacing #address-display-div with whatever selector you're going to display the address in.

Answer 2

Request page:
var request =$.ajax({
type: "POST",
url: "demo2.php",
data: {myname: name,myaddress: address,myemail: email}
dataType: "json",
success: function (a) {
alert(a[0]);
}
});
request.fail(function(jqXHR, textStatus){alert('Ajax Error: '+ textStatus);});
And in your php file:
<?php
if(isset($_POST['myname']) && isset($_POST['myaddress']) && isset($_POST['myemail'])){
[do your stuff]
echo json_encode(array(0=>'<pre>'.print_r( $_POST,true).'</pre>'));
}
else
echo json_encode(array(0=>'Missed Variable'));
exit();
?>
Otherwise can you also post your php page?