1.2.702. Missing Parenthesis

Adding parenthesis to addition expressions make them more readable and to prevent bugs.

In the expressions below, the code is legit, although it is prone to misunderstanding.

<?php

// Missing some parenthesis!!
if (!$a instanceof Stdclass) {
    print "Not\n";
} else {
    print "Is\n";
}

// Could this addition be actually,
$c = -$a + $b;

// this one ?
$c = -($a + $b);

// or this one ?
$c = $b - $a;

?>

See also Operators Precedence.

1.2.702.1. Suggestions

• Use parenthesis to show intent in the addition expression

1.2.702.2. Specs

Short name	Structures/MissingParenthesis
Rulesets	All, Analyze, CE, CI-checks, Changed Behavior
Exakat since	1.2.6
PHP Version	All
Severity	Major
Time To Fix	Instant (5 mins)
Precision	High
Features	parenthesis, readability
Available in	Entreprise Edition, Community Edition, Exakat Cloud