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int rand
([
int min
], [
int max
]);
If called without the optional min,max arguments rand() returns a pseudo-random value between 0 and RAND_MAX. If you want a random number between 5 and 15 (inclusive), for example, use rand(5,15).
Remember to seed the random number generator before use with srand() .
See also srand() , getrandmax() , mt_rand() , mt_srand() and mt_getrandmax() .