How to use filter has var in PHP
This article describe about filter_has_var() Function in PHP.
filter_has_var() Function
The variable of specified input type exits or not check by the filter_has_var() function.
It is return TRUE on success and FALSE on failure.
Syntax
|
filter_has_var( type, variable)
|
| Parameter |
Description |
| type |
Required. Define the type for check.
possible input type.
- INPUT_SERVER
- INPUT_ENV
- INPUT_GET
- INPUT_POST
- INPUT_COOKIE
|
| variable |
Required. Define the variable for check. |
Example
<html>
<body>
<?php
if(!filter_has_var(INPUT_GET, "name"))
{
echo("Input type does not exist");
}
else
{
echo("Input type exists");
}
?>
</body>
</html> |
Output
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