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Accepted
Carlos Bonilla
Asked: 2020-07-02 19:39:51 +0800 CST 2020-07-02 19:39:51 +0800 CST

How to check that the user inserted a url?

  • 772

I am working on a social network and when the user comments on an address url, it is taken as a simple comment.

I would like that when I put an address urlthere it is when I give clickit to take you to that address.

For example , facebooka user sends a urlchat and clicking clicktakes you to that page.

php

2 Answers

  1. Best Answer

    You could start by validating that the Stringinput is a URL. You can use filter_var():

    if (filter_var($textoIngresadoPorUsuario, FILTER_VALIDATE_URL)) { 
   echo "Es una URL";
}
    • 1

  2. We can take advantage of certain patterns in the url's, for example the use of www, http, httpsto detect a possible url:

    <?php
$texto = "es un comentario con una url https://es.stackoverflow.com de prueba";
$temp = explode(" ",$texto);
$new = array();
foreach ($temp as $key => $word):
    if ( filter_var($word, FILTER_VALIDATE_URL) ):
        $new[] = "<a href='".$word."'>".$word."<a/>";
    else:
        $new[] = $word;
    endif;
endforeach;
$texto = implode(" ", $new);
echo $texto;
?>

    Or we can use filter_var() to validate:

    <?php
$texto = "es un comentario con una url https://es.stackoverflow.com de prueba";
$temp = explode(" ",$texto);
$new = array();
foreach ($temp as $key => $word):
    if ( !(strpos($word, 'www') === false) || !(strpos($word, 'http') === false)  ):
        $new[] = "<a href='".$word."'>".$word."<a/>";
    else:
        $new[] = $word;
    endif;
endforeach;
$texto = implode(" ", $new);
echo $texto;
?>
    • 0