Question

How to sanitize and validate an URL with filter in PHP

Answer 1

/*
mixed filter_var ( mixed $variable [, int $filter = FILTER_DEFAULT [, mixed $options ]] )

// Check URL (according to: http://www.faqs.org/rfcs/rfc2396)
*/
   
$url = "http://www.collectivesolver.com";

// Remove illegal characters 
$url = filter_var($url, FILTER_SANITIZE_URL);

// Validate url
if (!filter_var($url, FILTER_VALIDATE_URL) === false) 
    echo("$url is valid URL");
else 
    echo("$url is not valid URL");

        
/*
run:
    
http://www.collectivesolver.com is valid URL 
  
*/

 

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Answer 2

/*
mixed filter_var ( mixed $variable [, int $filter = FILTER_DEFAULT [, mixed $options ]] )

// Check URL (according to: http://www.faqs.org/rfcs/rfc2396)
*/
   
$url = "http://www.collectivesolver.com";

// Remove illegal characters 
$url = filter_var($url, FILTER_SANITIZE_URL);

// Validate url
if (!filter_var($url, FILTER_VALIDATE_URL, FILTER_FLAG_QUERY_REQUIRED) === false) 
    echo("$url is valid URL");
else 
    echo("$url is not valid URL");

        
/*
run:
    
http://www.collectivesolver.com is not valid URL 
  
*/

 

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