List of allowed links that the user input should contain

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List of allowed links that the user input should contain

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#2 by (0 votes)

1

In my form, I would like the visitor to be able to enter in any field any URL that is test.com or test2.com (wildcard), for example test.com/loquesea/39292, like a wildcard.

I have the following in PHP:

$allowedsites = array(
'http://test.com/*',
'http://test2.com/*',
);

if(in_array($longlink, $allowedsites)) {
$error = "The URL is in the array!";
}else{
$error = "The URL doesn't exists in the array.";
include ("crear.php");
exit;
}

I have tried without * and with *, it has not worked for me. It is for a URL shortener restricted to certain pages . Why in bold? Because I'm not looking if the input matches with a single page, but with more than one. Thanks.

php

asked by Hernando Pineda 05.04.2017 в 20:39

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2 answers

Parsear m3u php Create intent with the id of a list

score 0 · Answer 1

Well, I can think of a function like this:

echo check('test.com/wtf'); //url válida
echo check('test.com.mx/wtf'); //url válida
echo check('testddd2.com/wtf'); //url no válida

function check($cadena) //funcion que recibe una cadena
{
  if (strpos($cadena, 'test.com') !== false) //strpos() busca coincidencias de una cadena dada con un valor definido. Este te regresa true o false segun sea el caso
  {
      return 'URL válida';
  }

  else
  {
    if (strpos($cadena, 'test.com.mx') !== false) //anidar la función tantas veces como consideres necesario. O hacer un array de "test" y recorrerlo.
    {
      return 'URL válida';
    }

    else
    {
      if (strpos($cadena, 'test2.com') !== false)
      {
        return 'URL válida';
      }

      else
      {
        return 'URL inválida';
      }
    }
  }
}

The idea you already have, use your ingenuity to adapt it little by little what you need. Nobody will give you the entire answer to your program.

Greetings.

score 0 · Answer 2

in_array looks for an exact match, if you try to evaluate variations of the string you need regular expressions.

$patron = '/^http:[s]?\/\/test[a-z0-9]*\.com\/[a-z]*$/';
$url = 'http://test.com/';

preg_match($patron, $url);

preg_match returns 1 if the string matches the pattern or 0 if it does not, if you try urls like link or link will return 1 for example.