How to use FILTER VALIDATE URL in PHP
This article describe about FILTER_VALIDATE_URL Filter in PHP.
FILTER_VALIDATE_URL Filter
For filter validates value as an URL use FILTER_VALIDATE_URL filter.
- Name: "validate_url"
- ID-number: 273
Possible flags:
FILTER_FLAG_SCHEME_REQUIRED - It take URL to be an RFC URL (like http://program)
FILTER_FLAG_HOST_REQUIRED - It take URL to include host name (like http://www.program.com)
FILTER_FLAG_PATH_REQUIRED - It take URL to have a path after the domain name (like www.program.com/program1/test2/)
FILTER_FLAG_QUERY_REQUIRED - It take URL to have a query string (like "program.php?name=Raman&age=27")
Example 1
<html>
<body>
<?php
$url = "http://www.program.com";
if(!filter_var($url, FILTER_VALIDATE_URL))
{
echo "URL is not valid";
}
else
{
echo "URL is valid";
}
?>
</body>
</html> |
Output
Example 2
<html>
<body>
<?php
$url = "program.php?name=Raman&age=27";
if(!filter_var($url, FILTER_VALIDATE_URL,
FILTER_FLAG_QUERY_REQUIRED))
{
echo "URL is not valid";
}
else
{
echo "URL is valid";
}
?>
</body>
</html> |
Output
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