How to validate a URL in PHP

It is very important to check URL is valid. In this article, We have shared with you how to validate URL in PHP. Using filter_var() function with FILTER_VALIDATE_URL Filters, we can easily validate a URL in PHP.

Also Read :How to validate an email address in PHP

Using: regular function preg_match() validates an URL:

	// Web URL
	$website = "https://techarise.com";
	// Validate URL
	if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$website)) {
	  echo ("$website is a valid URL");
	} else {
          echo ("$website is not a valid URL");
        }

// Web URL

$website = "https://techarise.com";

// Validate URL

if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$website)) {

echo ("$website is a valid URL");

} else {

echo ("$website is not a valid URL");

}

Using: FILTER_VALIDATE_URL filter validates an URL:

	// Web URL
	$website = "https://techarise.com";
	// Validate URL
	if (filter_var($website, FILTER_VALIDATE_URL) === FALSE) {
	    echo ("$website is a valid URL");
	} else {
	    echo ("$website is not a valid URL");
	}