PHP | filter_id() Function
The filter_id() function is an inbuilt function in PHP which returns the filter ID of a specified filter name. It is used to get the filter id of the particular filter in PHP by using filter_id function by giving the name of the filter as input and get the associated id to it. Syntax:
int filter_id( $filtername )
Parameters: This function accepts single parameter $filtername which is mandatory. It holds the filter name. Return Value: It returns the ID of the filter on success or False if filter doesn’t exist. Note: This function available for PHP 5.2.0 and newer versions. Example 1:
php
<?php
echo (filter_id("validate_email"));
?>
|
Explanation: validate_email is name of the filter here. The filter_id (“validate_email”) returns 274 as ID of the filter validate_email. Example 2: This example shows all the available filter name and it’s corresponding filter id represented in filter_list() function.
php
<?php
foreach (filter_list() as $id => $filter ) {
echo '<tr><td>' . $filter . '</td><td>'
. filter_id( $filter ) . '</td></tr>' ;
}
?>
|
Output:
int |
257 |
boolean |
258 |
float |
259 |
validate_regexp |
272 |
validate_domain |
277 |
validate_url |
273 |
validate_email |
274 |
validate_ip |
275 |
validate_mac |
276 |
string |
513 |
stripped |
513 |
encoded |
514 |
special_chars |
515 |
full_special_chars |
522 |
unsafe_raw |
516 |
email |
517 |
url |
518 |
number_int |
519 |
number_float |
520 |
magic_quotes |
521 |
callback |
1024 |
Explanation: The filter_list() function returning list of filter name. Using filter_id() function id of the filter name is extracted and given output as HTML table component (to represent in better way only). References: http://php.net/manual/en/function.filter-id.php
Last Updated :
29 Dec, 2022
Like Article
Save Article
Share your thoughts in the comments
Please Login to comment...