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Manual: srand
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srand

srand -- seed the random number generator

Description

void srand(int seed);

Seeds the random number generator with seed. 

  1 
  2 // seed with microseconds since last "whole" second
  3 srand((double)microtime()*1000000);
  4 $randval = rand();
  5 

See also rand(), getrandmax(), mt_rand(), mt_srand() and mt_getrandmax().


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