Php - in_array() and ! in_array() check 0 value - php

Question

if(( (in_array(0,$status_arr)) || (in_array(0,$genstatus_arr)) ) &&
((!in_array(0,$escalation_arr)) || (!in_array(0,$genescalation_arr))) ){
echo 'Something';
}else if(( (in_array(1,$status_arr)) || (in_array(1,$genstatus_arr)) )){
echo 'Something Else';
}
Here I am comparing 0 value in_array and non-zero which is !in_array. The results varies according to if-else condition but does not output expected result.
To avoid this, I tried with the third parameter, true, placing the comparison in strict mode which will not only compare values, but types as well:
How can I check if 0 or 1 exists in some array and do not exist in another array ?
The array values would be like below:
var_dump($status_arr);
array (size=6)
0 => string '0' (length=1)
1 => string '0' (length=1)
2 => string '0' (length=1)
3 => string '0' (length=1)
4 => string '0' (length=1)
var_dump($genstatus_arr);
array (size=6)
0 => string '1' (length=1)
1 => string '1' (length=1)
2 => string '1' (length=1)
3 => string '1' (length=1)
4 => string '1' (length=1)
For the below condition its not working
if( (in_array(0,$status_arr)) && (!in_array(0,$genstatus_arr)) )
Also its not a possible duplicate of IN ARRAY

Answer 1

var_dump(in_array(0, $status_arr, true));
Should return true, nothing abnormal there. If you are seeing false it is most probably because either of your 0's is a string 0 and not numeric 0.
If that is the case, remove the strict parameter
$array=array(0,2,3);
var_dump(in_array(0,$array,true));
Returns
bool(true)
And
$array=array('0','2','3');
var_dump(in_array(0,$array,true));
Returns
bool(false)
You mentioned
For the below condition its not working
print_r($status_arr);
Array([0] => 0 [1] => 0 [2] => 0 [3] => 0 [4] => 0 [5] => 0)
print_r($genstatus_arr);
Array([0] => 1 [1] => 1 [2] => 1 [3] => 1 [4] => 1 [5] => 1)
if( (in_array(0,$status_arr)) && (!in_array(0,$genstatus_arr)) )
Which is an incorrect observation, because the condition works perfectly fine.
Example

Answer 2

In your case your are trying to work with strings
var_dump($status_arr);
array (size=6)
0 => string '0' (length=1)
1 => string '0' (length=1)
2 => string '0' (length=1)
3 => string '0' (length=1)
4 => string '0' (length=1)
var_dump($genstatus_arr);
array (size=6)
0 => string '1' (length=1)
1 => string '1' (length=1)
2 => string '1' (length=1)
3 => string '1' (length=1)
4 => string '1' (length=1)
Just try this example:
<?php
$status_arr = array();
$status_arr = array_pad($status_arr, 6, 0);
$genstatus_arr = array();
$genstatus_arr = array_pad($genstatus_arr, 6, 1);
var_dump($status_arr);
var_dump($genstatus_arr);
if( (in_array(0,$status_arr)) && (!in_array(0,$genstatus_arr)) ) {
echo 'Works as espected';
}