for testing and deploying your application
for finding and fixing issues
for empowering human code reviews
<?php
declare(strict_types = 1);
namespace hanneskod\readmetester\Runner;
use hanneskod\readmetester\CodeBlock;
/**
* Execute code using eval()
*/
class EvalRunner implements RunnerInterface
{
public function run(CodeBlock $codeBlock): Result
$returnValue = '';
$returnValue
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
$myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; }
Both the $myVar assignment in line 1 and the $higher assignment in line 2 are dead. The first because $myVar is never used and the second because $higher is always overwritten for every possible time line.
$myVar
$higher
$exception = null;
ob_start();
try {
$returnValue = eval($codeBlock);
} catch (\Exception $e) {
catch (\Exception $e) { $exception = $e; }
This check looks for unreachable code. It uses sophisticated control flow analysis techniques to find statements which will never be executed.
Unreachable code is most often the result of return, die or exit statements that have been added for debug purposes.
return
die
exit
function fx() { try { doSomething(); return true; } catch (\Exception $e) { return false; } return false; }
In the above example, the last return false will never be executed, because a return statement has already been met in every possible execution path.
return false
$exception = $e;
}
return new Result($returnValue, ob_get_clean(), $exception);
hanneskod /
readme-tester
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This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.