php: if current url contains "/demo" do something

Question

I want to check if my current URL contains "/demo" at the end of the url, for example mysite.com/test/somelink/demo to do something. Here is my attempt :

$host = $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'];
if($host == 'mysite.com/test/somelink/demo') 
 {
// Do something
}
else
{
// Do something
}

This seems to work fine, but the problem is that /somelink needs to by dynamic.

Any suggestion on how can I do this ?

Thank you !

Edit:

<?php
/* An abstract class for providing form types */
abstract class ECF_Field_Type {
    private static $types = array();
    protected $name;

    /* Constructor */
    public function __construct() {
        self::register_type( $this->name, $this );
    }

if(basename($_SERVER['REQUEST_URI']) == 'stats'){
echo "Hello World";
}

    /* Display form field */

    public abstract function form_field( $name, $field );

    /* Display the field's content */
    public function display_field( $id, $name, $value ) {
        return "<span class='ecf-field ecf-field-$id'>"
            . "<strong class='ecf-question'>$name:</strong>"
            . " <span class='ecf-answer'>$value</span></span>\n";
    }


    /* Display field plain text suitable for email display */
    public function display_plaintext_field( $name, $value ) {
        return "$name: $value";
    }

    /* Get the description */
    abstract public function get_description();
}
?>

Solution 1

Just use,

if(basename($_SERVER['REQUEST_URI']) == 'demo'){
    // Do something
}

Solution 2

<?php
    if (preg_match("/\/demo$/", $_SERVER['REQUEST_URI'])) {
        // Do something
    } else {
        // Do something else
    }
?>

Comments

[agis]

Just tried but I'm getting a weird syntax error : Parse error: syntax error, unexpected T_IF, expecting T_FUNCTION in

[agis]

Just tried it and Im getting a weird syntax error: Parse error: syntax error, unexpected T_IF, expecting T_FUNCTION in

[agis]

Yes, I think is something wrong with my code but I don't understand why, I've edited my question with what I've tried please take a look...

[Rikesh]

So now what is the issue ?

[agis]

Parse error: syntax error, unexpected T_IF, expecting T_FUNCTION in

[agis]

And if put it outside the abstract class ECF_Field_Type { is working fine

[agis]

I think I will ask another question for this issue because is not related with what I was asking for. Thank you !