Check multiple variables (boolean) in PHP

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!

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) {
}

Do just:

if($phaseOne && $phaseTwo && $phaseThree)

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.

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) {}

Try with this:

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

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) { ... }