- var_dump: documentation ( source)
- mt_rand: documentation ( source)
- hash: documentation ( source)
- date: documentation ( source)
<?php
$path = "/var/www/foo";
var_dump($pаth."/user/supplied/path"); // prints /user/supplied/path, and emits a notice
// let's write a secure random number generator
function crypto_rnd() {
$rnd = mt_rand(0, 1e30); // 3v4l apparently doesn't have openssl_random_pseudo_bytes
$today = date('c'); // extra entropy can't hurt!
return hash("sha512", $rnd.$today); // oops, that's actually r\u2060nd, which is undefined,
// i.e. NULL, and the result depends only on the current time...
}
var_dump(crypto_rnd() === crypto_rnd()); // bool(true)... uh oh
$foo = 1;
var_dump($foo === $foо); // bool(false)...
$x = 2;
var_dump($x+$x); // int(2), what the everloving fuck