1.2.873. One If Is Sufficient

Nested conditions may be rewritten another way, to reduce the amount of code.

Nested conditions are equivalent to an && condition. As such, they may be switched. When one of the condition has no explicit else, then it is lighter to write it as the first condition. This way, it is written once, and not repeated.

<?php

// Less conditions are written here.
    if($b == 2) {
        if($a == 1) {
            ++$c;
        }
        else {
            ++$d;
        }
    }

// ($b == 2) is double here
    if($a == 1) {
        if($b == 2) {
            ++$c;
        }
    }
    else {
        if($b == 2) {
            ++$d;
        }
    }
?>

1.2.873.1. Suggestions

• Switch the if…then conditions, to reduce the amount of conditions to read.

1.2.873.2. Specs

Short name	Structures/OneIfIsSufficient
Rulesets	All, Suggestions
Exakat since	1.2.6
PHP Version	All
Severity	Minor
Time To Fix	Quick (30 mins)
Precision	Very high
Examples	Tikiwiki
Available in	Entreprise Edition, Exakat Cloud