i doing exercise found online teach myself php. program making "guess number" game need generate random number guessed. successful in exercise when not using class , using html input boxes users input:
<?php if(isset($_post['number'])) { $number = $_post['number']; } else { $number = rand(1,99); } if($_post["guess"]) { // grab user input guess $guess = $_post['guess']; $number = $_post['number']; $output = ''; static $count = 0; //initialize count if ($guess < $number) { $output .= "$guess" . "<br />" . "guess higher"; $count++; } elseif($guess > $number) { $output .= "$guess" . "<br />" . "guess lower"; $count++; } elseif($guess == $number) { $count++; $output .= "$guess" . "<br />" . "you got it!" . "<br />" . "you guessed in " . $count . " trials"; } } ?> <!doctype html> <html> <head> <title>guess number</title> </head> <body> <form action="numberguess.php" method="post"> <label for="guess">guess number:</label><br/ > <input type="text" name="guess" /> <input name="number" type="hidden" value="<?= $number ?>" /> <input name="submit" type="submit" /> <br/> <?php echo $output ?> <br/> </form> </body> </html> however, want repeat exercise using json input , using classes/objects. tried using rand() generate random number, causes issue , page won't load:
class numberguess { protected $guess = 0; const randnumber = rand(1,99); protected $isnumber = false; protected $higher = true; function __construct($inputguess) { $this->guess = $inputguess; } public function getresult() { $this->numberchecker(); if($this->higher == true) { $this->higher = "higher"; } elseif($this->higher == false) { $this->higher = "lower"; } if($this->isnumber == false) { return $this->guess . " incorrect, " . "try guessing " . $this->higher; } elseif($this->isnumber == true) { return $this->guess . " correct!"; } } private function numberchecker() { if($this->guess < self::randnumber) { $this->higher = true; $this->isnumber = false; } elseif($this->guess > self::randnumber) { $this->higher = false; $this->isnumber = false; } elseif($this->guess == self::randnumber) { $this->higher = false; $this->isnumber = true; } } } if ( isset($_server['query_string']) ) { $inputstring = $_server['query_string']; $inputguess = intval($inputstring); } $myguess = new numberguess($inputguess); echo json_encode($myguess->getresult()); could please explain me how can generate random number in class using json?
you can use php rand() or mt_rand() function generate random number between range.
rand()syntax
int rand ( void ) #or int rand ( int $min , int $max )
mt_rand()syntax
int mt_rand ( void ) #or int mt_rand ( int $min , int $max ) note : can use javascript math.random() function instant generate random number. or can use ajax generate random number using php.
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