PHP FILTER_VALIDATE_URL Filter
Complete PHP Filter Reference
Definition and Usage
The FILTER_VALIDATE_URL filter validates value as a URL.
- Name: "validate_url"
- ID-number: 273
Possible flags:
- FILTER_FLAG_SCHEME_REQUIRED - Requires URL to be an RFC compliant URL
(like http://example)
- FILTER_FLAG_HOST_REQUIRED - Requires URL to include host name (like
http://www.example.com)
- FILTER_FLAG_PATH_REQUIRED - Requires URL to have a path after the domain
name (like www.example.com/example1/test2/)
- FILTER_FLAG_QUERY_REQUIRED - Requires URL to have a query string (like "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";
}
?>
The output of the code will be:
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";
}
?>
The output of the code will be:
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