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ext/filter: filter_var_array with FILTER_VALIDATE_INT|FILTER_NULL_ON_FAILURE for an entry flag does not validate. #16993
Description
Description
The following code:
<?php
$data = [
'product_id' => '42',
'component1' => '10.36',
'component2' => '10.36',
];
$filters = [
'product_id' => FILTER_VALIDATE_INT,
'component1' => FILTER_VALIDATE_INT,
'component2' => FILTER_VALIDATE_INT|FILTER_NULL_ON_FAILURE,
'doesnotexist1' => FILTER_VALIDATE_INT,
'doesnotexist2' => FILTER_VALIDATE_INT|FILTER_NULL_ON_FAILURE,
];
var_dump(filter_var_array($data, $filters));Resulted in this output:
array(5) {
["product_id"]=>
int(42)
["component1"]=>
bool(false)
["component2"]=>
string(5) "10.36"
["doesnotexist1"]=>
NULL
["doesnotexist2"]=>
NULL
}
But I expected this output instead:
array(5) {
["product_id"]=>
int(42)
["component1"]=>
bool(false)
["component2"]=>
NULL
["doesnotexist1"]=>
NULL
["doesnotexist2"]=>
NULL
}
PHP Version
PHP 5.4.0 to master
Operating System
No response
Activity
ndossche commentedon Jul 19, 2025
I investigated this.
Correct usage seems to be:
and this works as expected.
I suppose we could at least do with a warning like
filter_varemits when having an invalid filter ID, such that users know they're using it "wrong".Girgias commentedon Jul 20, 2025
Yeah, I think this makes sense as it is quite confusing of a behaviour
Fix GH-16993: Fix filter_var_array to warn when validation filters ar…