Use early exits and don’t use else

Code almost never needs the else keyword. It can be written in a way to use early exits with return or continue instead. This following code could have been written with an else. This rule keeps the main/happy path of the code on the main level of the method.

  <?php

 public function formatQueryString(string $query): string
 {
     if (strlen($query) === 0) {
         return '';
     }

     parse_str($query, $queryArgs);

     $queryArgs = $this->truncateArrayValues($queryArgs);

     return json_encode($queryArgs, JSON_PRETTY_PRINT);
 }

For loops we continue to the next iteration for early exits:

  <?php

 private function parseErrorTrace(string $trace, $removeArguments = false)
 {
     $traceResult = [];

     $parts = explode("\n", $trace);
     foreach ($parts as $line) {
         if (strpos($line, '{main}') !== false) {
             continue;
         }

         if (strpos($line, '#') !== 0) {
             continue;
         }

         // more
     }
 }