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Re: $_SERVER["REQUEST_METHOD"] == "GET" vs $_SERVER["REQUEST_METHOD"] == "POST"

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Alla wrote:
>     // else if the user is already at that form page and sees the form he
>     needs to fill in else if ($_SERVER["REQUEST_METHOD"] == "POST")
>     {
>         // validate submission
>         if (empty($_POST["username"]))
>         // do something

BTW, I have a question: how to write conditions "is screen_field empty?". If 
I write empty($_POST['screen_field']) I will receive TRUE for 
$_POST['screen_field'] === '0'. If screen_field is text input this makes a 
problem. Thus I wrote a function:

function is_empty($val) {
    if ($val === '0') {
        return FALSE;
    }
    if (is_string($val)) {
        $val = trim($val);
    }
    return empty($val);
}

and I use it for screen fields and database text values but I was criticised 
by PHP programmers that my solutions is not "PHP-way".

(Sorry for my English)

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$_SERVER["REQUEST_METHOD"] == "GET" vs $_SERVER["REQUEST_METHOD"] == "POST" Alla <modelling.data@gmail.com> - 2016-07-30 04:47 -0700
  Re: $_SERVER["REQUEST_METHOD"] == "GET" vs $_SERVER["REQUEST_METHOD"] == "POST" "R.Wieser" <address@not.available> - 2016-07-30 14:36 +0200
    Re: $_SERVER["REQUEST_METHOD"] == "GET" vs $_SERVER["REQUEST_METHOD"] == "POST" "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-07-30 14:48 +0200
      Re: $_SERVER["REQUEST_METHOD"] == "GET" vs $_SERVER["REQUEST_METHOD"]== "POST" "R.Wieser" <address@not.available> - 2016-07-30 15:38 +0200
        Re: $_SERVER["REQUEST_METHOD"] == "GET" vs $_SERVER["REQUEST_METHOD"]== "POST" Alla <modelling.data@gmail.com> - 2016-08-02 00:16 -0700
  Re: $_SERVER["REQUEST_METHOD"] == "GET" vs $_SERVER["REQUEST_METHOD"] == "POST" Jivanmukta <jivanmukta@poczta.onet.pl> - 2016-07-30 19:27 +0200
    Re: $_SERVER["REQUEST_METHOD"] == "GET" vs $_SERVER["REQUEST_METHOD"] == "POST" Jerry Stuckle <jstucklex@attglobal.net> - 2016-07-30 17:18 -0400

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