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
The Altova MissionKit is an integrated suite of tools ideal for:
- XML development
- Web & Web services development
- Data mapping & integration
- Rendering & publishing XML & database data
- XBRL validation, taxonomy editing, transformation & rendering
The MissionKit for XML Developers includes XMLSpy® - the industry-leading XML editor; MapForce® - a
graphical data mapping, conversion, and integration tool; StyleVision® - a visual XSLT stylesheet designer;
DiffDog® - an XML-aware diff/merge tool; and 2 additional tools.
Try all 6 products free for 30 days!
Download a fully-functional free trial
|
|
|
|
