hmdnawaz Posted February 3, 2011 Share Posted February 3, 2011 How to generate a unique random number in php??? Any one who can help me? Quote Link to comment https://forums.phpfreaks.com/topic/226542-how-to-generate-a-unique-random-number-in-php/ Share on other sites More sharing options...
gristoi Posted February 3, 2011 Share Posted February 3, 2011 You need to use the rand() function. Rand($minrange, $maxrange); // so for example Rand (0,10); // will generate a random number between 0 and 10 Quote Link to comment https://forums.phpfreaks.com/topic/226542-how-to-generate-a-unique-random-number-in-php/#findComment-1169277 Share on other sites More sharing options...
hmdnawaz Posted February 3, 2011 Author Share Posted February 3, 2011 It will generate a random number but i want a UNIQUE random number to be generated. Quote Link to comment https://forums.phpfreaks.com/topic/226542-how-to-generate-a-unique-random-number-in-php/#findComment-1169279 Share on other sites More sharing options...
Mr_J Posted February 3, 2011 Share Posted February 3, 2011 The rand function will generate unique no's. You can use mt_rand as well. To make sure you always start from a different place in sequence, you have to seed the random number generator by calling the srand function - mt_srand Quote Link to comment https://forums.phpfreaks.com/topic/226542-how-to-generate-a-unique-random-number-in-php/#findComment-1169281 Share on other sites More sharing options...
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