URL variable shown on page [closed] - php

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I am trying my best to describe this. I'd basically like to be able to have something like this in a url:
mydomain.com/?&name=Courtney
The name variable being Courtney. I would like to print it onto the page so when visited with the name=Courtney it'd state "Hello Courtney!" or "Hello Taylor!" Depending on who it is, if neither, don't display their name and just say "Hello!" I'm hoping someone here knows how to use a name in a url variable and is welling to share.
Simple in essence, but, I'm not sure how simple it is in code.

Answer 1

Directly from the PHP website:
echo 'Hello ' . htmlspecialchars($_GET["name"]) . '!';
if you want to check if the variable is available:
if (isset($_GET["name"])) {
echo 'Hello ' . htmlspecialchars($_GET["name"]) . '!';
} else {
echo 'Hello!';
}

Answer 2

<?php
if($_GET['name']){
echo "Hello " . $_GET['name'] . "!";
}else{
echo "Hello!";
}
?>

Answer 3

use
if (isset($_GET['name'])) {
echo "Hello ".$_GET['name']."!";
}

Answer 4

You could do it all in one line with a Ternary Operator
// Collect name if present //
$name = (isset($_GET['name'])) ? ' ' . ucwords(htmlspecialchars($_GET['name'])) : '';
// Echo output //
echo "Hello{$name}!";
// Output if name present //
Hello Courtney!
// Output if no name present //
Hello!

Answer 5

I'll provide a quick example. Complicated subject, simple code.
<?php
if(isset($_GET['name'])){
$name = $_GET['name'];
echo 'Hello ' . $name;
}
else{
echo 'No name supplied'
}
?>

Answer 6

if you want to use the current page url then after page load you can use
var address= document.URL
then extract the name (as url in your question is like 'mydomain.com/?&name=Courtney')
var name= address.substring(address.lastIndexOf('=') + 1)
if(name.length>0)
{alert("Hello "+name)}
else
alert("Hello")