Check if text contains URL [closed]

Answer 1

You can do a "simple" Regex :

<?

include 'function.php';

$text= $_POST['text'];

$regex = "((https?|ftp)\:\/\/)?"; // SCHEME 
$regex .= "([a-z0-9+!*(),;?&=\$_.-]+(\:[a-z0-9+!*(),;?&=\$_.-]+)?@)?"; // User and Pass 
$regex .= "([a-z0-9-.]*)\.([a-z]{2,3})"; // Host or IP 
$regex .= "(\:[0-9]{2,5})?"; // Port 
$regex .= "(\/([a-z0-9+\$_-]\.?)+)*\/?"; // Path 
$regex .= "(\?[a-z+&\$_.-][a-z0-9;:@&%=+\/\$_.-]*)?"; // GET Query 
$regex .= "(#[a-z_.-][a-z0-9+\$_.-]*)?"; // Anchor 

   if(preg_match("/^$regex$/", $text)) 
   { 
           postEntryWithUrl($text);
   } else {
           postEntry($text);
   }

?>

I had completed "a little more" the code... As you can see. :D

Answer 2

You can use stristr()

$has_link = stristr($string, 'http://') ?: stristr($string, 'https://');

http://php.net/manual/en/function.stristr.php

Or preg_match()

preg_match('/(http|ftp|mailto)/', $string, $matches);
var_dump($matches);

https://www.php.net/manual/en/function.preg-match.php

Answer 3

$text = (string) $_POST['text'];

$bHasLink = strpos($text, 'http') !== false || strpos($text, 'www.') !== false;

if($bHasLink){
    postEntryWithUrl($text);
}else{
    postEntry($text);
}