We can display list of available filters by using filter_list function. This function returns an array with list of available filters as elements. Here is the example.
Now we will modify it by displaying in a formatted output. We used standard array display techniques to display the elements of the array
Here is the code to display output
WE can get the filter id of the particular filter in PHP by using filter_id function. We will input the name of the filter and get the associated id of it. The list containing name of filter is available at filter_list page. Here is the syntax.
Int filter_id(filter name)
Here is one example
echo filter_id('validate_url');
The output of above line is here
273
We can also display the associated id of all the filters in a single list. Here is the sample code.
$ar=filter_list();
while (list ($key, $val) = each ($ar)) {
echo "$key -> $val : ( ".filter_id($val). " ) <br>";
}