For better readability, do not put more than one statement on a single line.

Noncompliant Code Example

if(someCondition) doSomething();

Compliant Solution

if(someCondition) {
  doSomething();
}

Exceptions

Anonymous functions containing a single statement are ignored.

$max_comparator = function ($v) { return $v > 2; };           // Compliant
$max_comparator = function ($v) { echo $v; return $v > 2; };  // Noncompliant