PHP generates random numbers

Generates a random number between 1-10 and does not repeat.

Method One: Use the shuffle function.

<?php$arr=range(1,10);shuffle($arr);foreach($arras $values){   echo$values." ";}?>

Method Two: Use the Array_unique function.

<?php$arr=array();while(count($arr)<10){    $arr[]=rand(1,10);    $arr=array_unique($arr);}echoimplode(" ",$arr);?>

Method Three: With the Array_flip function, the principle is the same, is to remove the duplicate value.

<?php$arr=array();$count1=0;$count= 0;$return= array();while($count< 10)  {   $return[] = mt_rand(1, 10);   $return = array_flip(array_flip($return));   $count= count($return);  }foreach($return as$value) {    echo$value." "; }echo"<br/>";$arr=array_values($return);// 获得数组的值 foreach($arras$key)echo$key."  ";?>

The above has a reference to Daniel, thank them for their selfless contribution source.

PHP generates random numbers