It is simple to get the visitor's IP in PHP, just using the $_SERVER['REMOTE_ADDR'] variable.
- Example:
<?php
$ip = $_SERVER['REMOTE_ADDR'];
echo 'Your IP is: '. $ip;
?>
But this method is not 100% sure. There are some servers that return the server IP when using $_SERVER['REMOTE_ADDR']. Not know why, maybe because they are behind of a proxy, or some server setings.

Generally, to get the user IP, on most servers it can be used the variable presented above, but if returns the IP of the server, there is also another way, the function presented below.
This function returns the visitor IP (even if the $_SERVER['REMOTE_ADDR'] contains the server IP) because it gets the IP from $_SERVER['HTTP_X_FORWARDED_FOR'].
Just add it in your script, and call it when you need (like in the example below).
// Function to get the user /visitor IP in PHP ( http://coursesweb.net/ )
function getUserIP() {
  $ip = $_SERVER['REMOTE_ADDR'];
  if (array_key_exists('HTTP_X_FORWARDED_FOR', $_SERVER)) {
    $ip = array_pop(explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']));
  }
  return $ip;
}
- Example:
<?php
// Function to get the user /visitor IP in PHP ( http://coursesweb.net/ )
function getUserIP() {
  $ip = $_SERVER['REMOTE_ADDR'];
  if (array_key_exists('HTTP_X_FORWARDED_FOR', $_SERVER)) {
    $ip = array_pop(explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']));
  }
  return $ip;
}

// Cals the getUserIP() function, and output the IP
$ip = getUserIP();
echo $ip;
?>

Daily Test with Code Example

HTML
CSS
JavaScript
PHP-MySQL
Which tag create a highlighted bolded text?
<q> <strong> <em>
<p>Address: <strong>http://CoursesWeb.net/</strong> - Tutorials.</p>
Which of these CSS codes displays the text bolded?
text-size: 18px; font-style: italic; font-weight: 800;
#id {
  font-weight: 800;
}
What JavaScript function can be used to call another function multiple times, to a specified time interval?
setInterval() setTimeout() push()
function someFunction() { alert("CoursesWeb.net"); }
setInterval("someFunction()", 2000);
Click on the correctly defined variable in PHP.
var vname = 8; $vname = 8; $vname == 8;
$vname = 8;
echo $vname;
Get visitor IP in PHP

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