PHP FILTER_VALIDATE_INT issue

Question

I had issue about FILTER_VALIDATE_INT function when i put 0 as entry value it show 'error' instead of 'ok':

$delivery = 0;
if (filter_var($delivery,FILTER_VALIDATE_INT)) {
    echo 'ok';
}else{
    echo 'error';
}

score 2 · Answer 1 · answered Jan 12 '18 at 14:25

2

Compare with false, because PHP consider zero returning as false

if (false !== filter_var($delivery,FILTER_VALIDATE_INT)) {

answered Jan 12 '18 at 14:25

splash58

score 2 · Answer 2 · answered Jan 12 '18 at 14:25

2

Check for strict type check it will work,

$delivery = 0;
if (filter_var($delivery,FILTER_VALIDATE_INT) !== false) {
    echo 'ok';
}else{
    echo 'error';
}

answered Jan 12 '18 at 14:25

Rahul

2 Answers2