// Correct:  
// Incorrect:

if($foo=='bar')     
if ($foo == 'bar')

$foo='bar';     
$foo = 'bar';

$foo=(($bar>5)?($bar+$foo):strlen($bar))?Help::$foo%5:$bar%7;   
$foo = (($bar>5) ? ($bar + $foo) : strlen($bar)) ? Hleper::$foo % 5 : $bar % 7;

$foo=(string)$bar;  
$foo = (string) $bar;

if((string)$bar)    
if ( (string) $bar)

preg_replace('/(\d+) dollar/','$1 euro',$str);  
preg_replace('/(\d+) dollar/', '$1 euro', $str);

if(($foo&&$bar)||($b&&$c))
if (($foo AND $bar) OR ($b && $c))

$arr=array('key'=>array('key'=>'value'+'value2'))   
$arr = array('key' => array('key' => 'value' + 'value2'))

$a+=$b/$c-$d;    
$a += $b / $c - $d;

$sql = "select * from table1 where id = 11 and ip = '127.0.0.1'";
$sql = "SELECT *
    FROM table1
    WHERE id = 11 AND ip = '127.0.0.1'";
    
$db->from('table')->join('table2')->where(array('id'=>1));
$db->from('table')->join('table2')->where(array('id' => 1));