PHP Variable declaration not working in Laravel 5.4 - php

Question

I have the following code in a Laravel 5.4 Blade view:
#php($strVal = $character->Strength)
#php($strMod = 0)
<?php
if ($strVal == 10 || 11) {
$strMod = 0;
} elseif ($strVal == 12 || 13) {
$strMod = 1;
} elseif ($strVal == 14) {
$strMod = 2;
} else {
$strMod = 2;
}
?>
It takes data from a MySQL table.
$strVal is an int from the table. The code creates a var called $strMod and goes through a number of if/elseif statements to see what it will be equal to.
It's shown on a webpage as follows:
<div class="huge charMod">+{{$strMod}}</div>
My issue is that it displays as "+0" no matter what strVar equals. strVar is working fine, I can pull it from the DB and display it via {{ $strVal }} but strMod refuses to take a value other than 0.

Answer 1

$strVal == 10 || 11 will always return true
Because that's not how comparisons work in PHP. The == operator has a higher precedence than || operator, so it will be performed first.
It means that $strVal == 10 || 11 gets turned into false || 11 .. which is true.
Instead of that code, I would recommend:
$map = [
10 => 0,
11 => 0,
12 => 1,
13 => 1,
// you dont actually need 14, because default value is aready 2
];
$result = 2;
if (array_key_exists($strVal, $map)) {
$result = $map[$strVal];
}
$strVal = $result;
Or, if you are using PHP 7.0+ it all can actually be written as:
$map = [10 => 0, 11 => 0, 12 => 1, 13 => 1];
$strVal = $map[$strVal] ?? 2;

Answer 2

You need to change your if checks to
if ($strVal == 10 || $strVal == 11) {
$strMod = 0;
} elseif ($strVal == 12 || $strVal == 13) {
$strMod = 1;
} elseif ($strVal == 14) {
$strMod = 2;
} else {
$strMod = 2;
}
if ($strVal == 10 || 11) will always return true. If you want to check two values you need to specify that by using the variable == value again as in the example above.