Logical operators equation in php - php

Question

i have a problem with my function which should combine logical operators according to data in array:
$arr = array(
0 => array(false, "or"),
1 => array(false, "or"),
2 => array(true)
);
the equation should be:
false or false or true
($arr[0][0] $arr[0][1] $arr[1][0] $arr[1][1] $arr[2][0])
And the result: true
But something wrong happens in function and it returns false.
What am i missing?
var_dump( arrayBoolValidation($arr) );
function arrayBoolValidation (array $arr) {
$num = count($arr);
$status = $arr[0][0];
for($i = 1; $i < $num; ++$i) {
if ($arr[$i-1][1] == "and") {
$status = filter_var($status, FILTER_VALIDATE_BOOLEAN) and filter_var($arr[$i][0], FILTER_VALIDATE_BOOLEAN);
} else if ($arr[$i-1][1] == "or") {
$status = filter_var($status, FILTER_VALIDATE_BOOLEAN) or filter_var($arr[$i][0], FILTER_VALIDATE_BOOLEAN);
}
}
return $status;
}

Answer 1

It's an operator precedence issue. and is not the same as &&. Look at http://php.net/manual/en/language.operators.precedence.php
= has higher priority than and, so $a = $b and $c; equals to $a = $b;.
You must use extra brackets ($a = ($b and $c);) or better use &&. Same thing about or (use ||).

Answer 2

Assuming that all conditions have to be evaluated:
Note: I have added the case when no operator is defined.
[...]
if (!isset($arr[$i-1][1])) {
$status = $status || $arr[$i][0]; // default: OR, && else
} else if ($arr[$i-1][1] == "and") {
$status = $status && $arr[$i][0];
} else if ($arr[$i-1][1] == "or") {
$status = $status || $arr[$i][0];
}
[...]

Answer 3

Change the following inside your loop:
if ($arr[$i-1][1] == "and") {
$status = (filter_var($status, FILTER_VALIDATE_BOOLEAN) and filter_var($arr[$i][0], FILTER_VALIDATE_BOOLEAN));
} else if ($arr[$i-1][1] == "or") {
$status = (filter_var($status, FILTER_VALIDATE_BOOLEAN) or filter_var($arr[$i][0], FILTER_VALIDATE_BOOLEAN));
}
You'll see the extra brackets.
If you don't put them, you set $status to filter_var($status, FILTER_VALIDATE_BOOLEAN), which will always be the same as the first entry (false in this case).

Answer 4

I think there is something wrong in loop
try,
for($i = 1; $i <=$num; ++$i) {