Check multiple variables (boolean) in PHP - php

Question

I'm using this in my code but I think it can be improved and can be done a simpler way?
if($phaseOne == true && $phaseTwo == true && $phaseThree == true) {
}

Answer 1

You can do it like this:
if($phaseOne && $phaseTwo && $phaseThree) { ... }
Or use ternary operator, if you're trying to define a variable on the basis of these conditions like this:
$var = ($phaseOne && $phaseTwo && $phaseThree) ? true : false;
Hope this helps!

Answer 2

Assuming you have an array with an arbitrary number of logical variables:
$logical = array($phraseOne,$phraseTwo,....);
$allTrue = array_reduce($logical, function ($x,$y) {return $x && $y;},true);
if($allTrue) {
}

Answer 3

Do just:
if($phaseOne && $phaseTwo && $phaseThree)

Answer 4

You don't need to compare it against true.
if ($phaseOne && $phaseTwo && $phaseThree) {
}
This occurs because the result of any comparison is a boolean:
var_dump(1 == 1); // bool(true)
var_dump(1 == 2); // bool(false)
Also if you variable contains a number, it can be used directly:
if (1) {
// This will be executed
}
if (0) {
// This will not be executed
}
Zero will be always be treated as false, any other number (positive or negative) will be true.

Answer 5

Unless you need to check each variable as explicitly identical to a boolean or variable, (see this stack overflow thread)
I'd do it this way
if ($phaseOne && $phaseTwo && $phaseThree) {}
Otherwise, I'd do it this way
if ($phaseOne === true && $phaseTwo === true && $phaseThree === true) {}

Answer 6

Try with this:
($phaseOne && $phaseTwo && $phaseThree) ? {//do something} : '';

Answer 7

Although I think it is arbitrary, controlversial, trivial, and won't preach the use of this, just for fun and learning - here's some typical php variable type juggling that will work also and takes up the least space... efficient in terms of source code length.
if($phaseOne*$phaseTwo*$phaseThree) { ... }