PHP FILTER_VALIDATE_URL filter
Complete PHP Filter Reference Definition and Usage
FILTER_VALIDATE_URL filter value as the URL to verify.
- Name: "validate_url"
- ID-number: 273
Possible signs:
- FILTER_FLAG_SCHEME_REQUIRED - requested URL is RFC-compliant URL (eg http: // example)
- FILTER_FLAG_HOST_REQUIRED - requested URL contains the host name (such as http://www.example.com)
- FILTER_FLAG_PATH_REQUIRED - requested URL path exists (eg www.example.com/example1/test2/) in the domain name
- FILTER_FLAG_QUERY_REQUIRED - requires the presence of URL query strings (such as "example.php name = Peter & age = 37?")
Example 1
<?php
$url = "http://www.example.com";
if(!filter_var($url, FILTER_VALIDATE_URL))
{
echo "URL is not valid";
}
else
{
echo "URL is valid";
}
?>
$url = "http://www.example.com";
if(!filter_var($url, FILTER_VALIDATE_URL))
{
echo "URL is not valid";
}
else
{
echo "URL is valid";
}
?>
Output code is as follows:
URL is valid
Example 2
<?php
$url = "example.php?name=Peter&age=37";
if(!filter_var($url, FILTER_VALIDATE_URL,
FILTER_FLAG_QUERY_REQUIRED))
{
echo "URL is not valid";
}
else
{
echo "URL is valid";
}
?>
$url = "example.php?name=Peter&age=37";
if(!filter_var($url, FILTER_VALIDATE_URL,
FILTER_FLAG_QUERY_REQUIRED))
{
echo "URL is not valid";
}
else
{
echo "URL is valid";
}
?>
Output code is as follows:
URL is valid
Complete PHP Filter Reference