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<div id="book.random" class="book">
 
 <h1 class="title">Random Number Generators and Functions Related to Randomness</h1>
 

 <div id="intro.random" class="preface">
  <h1 class="title">Introduzione</h1>
  <p class="para">

  </p>
 </div>

 



 



 




 



 




 



 




 



 



 



 




 



 



 




<ul class="chunklist chunklist_book"><li><a href="random.constants.php">Costanti predefinite</a></li><li><a href="random.examples.php">Esempi</a></li><li><a href="ref.random.php">Random Funzioni</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="function.getrandmax.php">getrandmax</a> — Show largest possible random value</li><li><a href="function.lcg-value.php">lcg_value</a> — Combined linear congruential generator</li><li><a href="function.mt-getrandmax.php">mt_getrandmax</a> — Show largest possible random value</li><li><a href="function.mt-rand.php">mt_rand</a> — Generate a random value via the Mersenne Twister Random Number Generator</li><li><a href="function.mt-srand.php">mt_srand</a> — Seeds the Mersenne Twister Random Number Generator</li><li><a href="function.rand.php">rand</a> — Generate a random integer</li><li><a href="function.random-bytes.php">random_bytes</a> — Get cryptographically secure random bytes</li><li><a href="function.random-int.php">random_int</a> — Get a cryptographically secure, uniformly selected integer</li><li><a href="function.srand.php">srand</a> — Seed the random number generator</li></ul></li><li><a href="class.random-randomizer.php">Random\Randomizer</a> — The Random\Randomizer class<ul class="chunklist chunklist_book chunklist_children"><li><a href="random-randomizer.construct.php">Random\Randomizer::__construct</a> — Constructs a new Randomizer</li><li><a href="random-randomizer.getbytes.php">Random\Randomizer::getBytes</a> — Get random bytes</li><li><a href="random-randomizer.getbytesfromstring.php">Random\Randomizer::getBytesFromString</a> — Get random bytes from a source string</li><li><a href="random-randomizer.getfloat.php">Random\Randomizer::getFloat</a> — Get a uniformly selected float</li><li><a href="random-randomizer.getint.php">Random\Randomizer::getInt</a> — Get a uniformly selected integer</li><li><a href="random-randomizer.nextfloat.php">Random\Randomizer::nextFloat</a> — Get a float from the right-open interval [0.0, 1.0)</li><li><a href="random-randomizer.nextint.php">Random\Randomizer::nextInt</a> — Get a positive integer</li><li><a href="random-randomizer.pickarraykeys.php">Random\Randomizer::pickArrayKeys</a> — Select random array keys</li><li><a href="random-randomizer.serialize.php">Random\Randomizer::__serialize</a> — Serializes the Randomizer object</li><li><a href="random-randomizer.shufflearray.php">Random\Randomizer::shuffleArray</a> — Get a permutation of an array</li><li><a href="random-randomizer.shufflebytes.php">Random\Randomizer::shuffleBytes</a> — Get a byte-wise permutation of a string</li><li><a href="random-randomizer.unserialize.php">Random\Randomizer::__unserialize</a> — Deserializes the data parameter into a Randomizer object</li></ul></li><li><a href="enum.random-intervalboundary.php">Random\IntervalBoundary</a> — The Random\IntervalBoundary Enum</li><li><a href="class.random-engine.php">Random\Engine</a> — The Random\Engine interface<ul class="chunklist chunklist_book chunklist_children"><li><a href="random-engine.generate.php">Random\Engine::generate</a> — Generates randomness</li></ul></li><li><a href="class.random-cryptosafeengine.php">Random\CryptoSafeEngine</a> — The Random\CryptoSafeEngine interface</li><li><a href="class.random-engine-secure.php">Random\Engine\Secure</a> — The Random\Engine\Secure class<ul class="chunklist chunklist_book chunklist_children"><li><a href="random-engine-secure.generate.php">Random\Engine\Secure::generate</a> — Generate cryptographically secure randomness</li></ul></li><li><a href="class.random-engine-mt19937.php">Random\Engine\Mt19937</a> — The Random\Engine\Mt19937 class<ul class="chunklist chunklist_book chunklist_children"><li><a href="random-engine-mt19937.construct.php">Random\Engine\Mt19937::__construct</a> — Constructs a new Mt19937 engine</li><li><a href="random-engine-mt19937.debuginfo.php">Random\Engine\Mt19937::__debugInfo</a> — Returns the internal state of the engine</li><li><a href="random-engine-mt19937.generate.php">Random\Engine\Mt19937::generate</a> — Generate 32 bits of randomness</li><li><a href="random-engine-mt19937.serialize.php">Random\Engine\Mt19937::__serialize</a> — Serializes the Mt19937 object</li><li><a href="random-engine-mt19937.unserialize.php">Random\Engine\Mt19937::__unserialize</a> — Deserializes the data parameter into a Mt19937 object</li></ul></li><li><a href="class.random-engine-pcgoneseq128xslrr64.php">Random\Engine\PcgOneseq128XslRr64</a> — The Random\Engine\PcgOneseq128XslRr64 class<ul class="chunklist chunklist_book chunklist_children"><li><a href="random-engine-pcgoneseq128xslrr64.construct.php">Random\Engine\PcgOneseq128XslRr64::__construct</a> — Constructs a new PCG Oneseq 128 XSL RR 64 engine</li><li><a href="random-engine-pcgoneseq128xslrr64.debuginfo.php">Random\Engine\PcgOneseq128XslRr64::__debugInfo</a> — Returns the internal state of the engine</li><li><a href="random-engine-pcgoneseq128xslrr64.generate.php">Random\Engine\PcgOneseq128XslRr64::generate</a> — Generate 64 bits of randomness</li><li><a href="random-engine-pcgoneseq128xslrr64.jump.php">Random\Engine\PcgOneseq128XslRr64::jump</a> — Efficiently move the engine ahead multiple steps</li><li><a href="random-engine-pcgoneseq128xslrr64.serialize.php">Random\Engine\PcgOneseq128XslRr64::__serialize</a> — Serializes the PcgOneseq128XslRr64 object</li><li><a href="random-engine-pcgoneseq128xslrr64.unserialize.php">Random\Engine\PcgOneseq128XslRr64::__unserialize</a> — Deserializes the data parameter into a PcgOneseq128XslRr64 object</li></ul></li><li><a href="class.random-engine-xoshiro256starstar.php">Random\Engine\Xoshiro256StarStar</a> — The Random\Engine\Xoshiro256StarStar class<ul class="chunklist chunklist_book chunklist_children"><li><a href="random-engine-xoshiro256starstar.construct.php">Random\Engine\Xoshiro256StarStar::__construct</a> — Constructs a new xoshiro256** engine</li><li><a href="random-engine-xoshiro256starstar.debuginfo.php">Random\Engine\Xoshiro256StarStar::__debugInfo</a> — Returns the internal state of the engine</li><li><a href="random-engine-xoshiro256starstar.generate.php">Random\Engine\Xoshiro256StarStar::generate</a> — Generate 64 bits of randomness</li><li><a href="random-engine-xoshiro256starstar.jump.php">Random\Engine\Xoshiro256StarStar::jump</a> — Efficiently move the engine ahead by 2^128 steps</li><li><a href="random-engine-xoshiro256starstar.jumplong.php">Random\Engine\Xoshiro256StarStar::jumpLong</a> — Efficiently move the engine ahead by 2^192 steps</li><li><a href="random-engine-xoshiro256starstar.serialize.php">Random\Engine\Xoshiro256StarStar::__serialize</a> — Serializes the Xoshiro256StarStar object</li><li><a href="random-engine-xoshiro256starstar.unserialize.php">Random\Engine\Xoshiro256StarStar::__unserialize</a> — Deserializes the data parameter into a Xoshiro256StarStar object</li></ul></li><li><a href="class.random-randomerror.php">Random\RandomError</a> — The Random\RandomError class</li><li><a href="class.random-brokenrandomengineerror.php">Random\BrokenRandomEngineError</a> — The Random\BrokenRandomEngineError class</li><li><a href="class.random-randomexception.php">Random\RandomException</a> — The Random\RandomException class</li></ul></div><?php manual_footer($setup); ?>