PHP filter_has_var() Function
 Complete PHP Filter Reference
Definition and Usage
The filter_has_var() function checks if a variable of a specified input type
exist.
Returns TRUE on success or FALSE on failure.
Syntax
filter_has_var(type, variable)
|
| Parameter |
Description |
| type |
Required. Specifies the type to check for Possible
input types:
- INPUT_GET
- INPUT_POST
- INPUT_COOKIE
- INPUT_SERVER
- INPUT_ENV
|
| variable |
Required. Specifies the variable to check |
Example
In this example the input variable "name" is sent to the PHP page:
<?php
if(!filter_has_var(INPUT_GET, "name"))
{
echo("Input type does not exist");
}
else
{
echo("Input type exists");
}
?>
|
The output of the code should be something like this:
Complete PHP Filter Reference
…
|
