A simple class to illustrate the inaccuracy of an answer on StackOverflow which has currently been upvoted by at least 23 "programmers" without a single one noticing this incorrect statement.

BsTester.php

/**
 * Just a simple demonstration after seeing an answer on StackOverflow relating to code auditing which despite
 * gathering the most votes by far (currently 23) includes the following clearly inaccurate statement without
 * a single comment pointing out the inaccurate claim.
 *
 * ========================================================================================================
 * Quote from the current top answer on http://stackoverflow.com/questions/4273244/auditing-a-php-codebase:
 * ========================================================================================================
 * Accidental Assignment — More often than not, you'll see this happen in some non-critical component of the
 * code, where it can sleep and/or lurk until you get an unexpected result one day: if ($foo = $this->bar()).
 * This always evaluates true, of course. In rare circumstances, you'll actually want to test for assignment.
 * If that is the case you should use double parenthesis to indicate intent: if (($foo = $this->bar()))
 * ========================================================================================================
 *
 * "Always evaluates true, of course" is the part I have most issue with.
 */
<?php
    class BsTester{
        function bar(){
            return false;
        }

        function test(){
            if($foo = $this->bar()){
                echo 'Evaluates TRUE';
            }else{
                echo 'Evaluates FALSE';
            }
        }
    }

    $bsTester = new BsTester();
    $bsTester->test(); // Outputs "Evaluates FALSE"