我想要一个小php函数来选择一个0到5之间的数字,50%的几率为零,并且同时在两个字符串之间随机选择:
该算法:
choose number between 0,1,2,3,4,5 randomly
(50% chance for zero, 50% chance for 1,2,3,4,5)
and
choose string blue, yellow randomly
return(number, string);
php能在一个函数中做到这一点吗。干杯)谢谢
我想要一个小php函数来选择一个0到5之间的数字,50%的几率为零,并且同时在两个字符串之间随机选择:
该算法:
choose number between 0,1,2,3,4,5 randomly
(50% chance for zero, 50% chance for 1,2,3,4,5)
and
choose string blue, yellow randomly
return(number, string);
php能在一个函数中做到这一点吗。干杯)谢谢
function getPair()
{
$colors = array( "blue", "yellow" );
$elem = $colors[ rand( 0, count( $colors ) - 1 ) ];
return array( rand( 0, 1 ) * rand( 1, 5 ), $elem );
}
0的50%机会使随机过程有偏差。请参见:
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