How to get parameters from a URL string?

Question

I have a HTML form field $_POST[\"url\"] having some URL strings as the value. Example values are:

https://example.com/test/1234?email=xyz@test.com
         


        

Answer 1

I created function from @Ruel answer. You can use this:

function get_valueFromStringUrl($url , $parameter_name)
{
    $parts = parse_url($url);
    if(isset($parts['query']))
    {
        parse_str($parts['query'], $query);
        if(isset($query[$parameter_name]))
        {
            return $query[$parameter_name];
        }
        else
        {
            return null;
        }
    }
    else
    {
        return null;
    }
}

Example:

$url = "https://example.com/test/the-page-here/1234?someurl=key&email=xyz5@test.com";
echo get_valueFromStringUrl($url , "email");

Thanks to @Ruel

Answer 2

you can use below code to get email address after ? in the URL

<?php
if (isset($_GET['email'])) {
    echo $_GET['email'];
}

Answer 3

In Laravel, I'm use:

private function getValueFromString(string $string, string $key)
{
    parse_str(parse_url($string, PHP_URL_QUERY), $result);

    return isset($result[$key]) ? $result[$key] : null;
}

Answer 4

Use $_GET['email'] for parameters in URL. Use $_POST['email'] for posted data to script. Or use _$REQUEST for both. Also, as mentioned, you can use parse_url() function that returns all parts of URL. Use a part called 'query' - there you can find your email parameter. More info: http://php.net/manual/en/function.parse-url.php

Answer 5

A much more secure answer that I'm surprised is not mentioned here yet:

filter_input

So in the case of the question you can use this to get an email value from the URL get parameters:

$email = filter_input( INPUT_GET, 'email', FILTER_SANITIZE_EMAIL );

For other types of variables, you would want to choose a different/appropriate filter such as FILTER_SANITIZE_STRING.

I suppose this answer does more than exactly what the question asks for - getting the raw data from the URL parameter. But this is a one-line shortcut that is the same result as this:

$email = $_GET['email'];
$email = filter_var( $email, FILTER_SANITIZE_EMAIL );

Might as well get into the habit of grabbing variables this way.

Answer 6

Dynamic function which parse string url and get value of query parameter passed in URL

function getParamFromUrl($url,$paramName){
  parse_str(parse_url($url,PHP_URL_QUERY),$op);// fetch query parameters from string and convert to associative array
  return array_key_exists($paramName,$op) ? $op[$paramName] : "Not Found"; // check key is exist in this array
}

Call Function to get result

echo getParamFromUrl('https://google.co.in?name=james&surname=bond','surname'); // bond will be o/p here