<?php error_reporting(error_reporting^E_NOTICE); $path = "/var/www/foo"; var_dump($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)
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