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FILTER_VALIDATE_URL constant in PHP
The FILTER_VALIDATE_URL constant validates a URL.
Flags
FILTER_FLAG_SCHEME_REQUIRED − URL must be RFC compliant.
FILTER_FLAG_HOST_REQUIRED − URL must include host name.
FILTER_FLAG_PATH_REQUIRED −URL must have a path after the domain name.
FILTER_FLAG_QUERY_REQUIRED −URL must have a query string.
Return
The FILTER_VALIDATE_URL constant does not return anything.
Example
<?php
$url = "https://www.example.com";
if (filter_var($url, FILTER_VALIDATE_URL)) {
echo("Valid URL!");
} else {
echo("Invalid URL!");
}
?>Output
The following is the output.
Valid URL!
Let us see another example.
Example
<?php
$url = "examplecom";
if (filter_var($url, FILTER_VALIDATE_URL)) {
echo("Valid URL!");
} else {
echo("Invalid URL!");
}
?>Output
Here is the output.
Invalid URL!
Updated on: 27-Jun-2020
188 Views
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