How to get a dynamic array input from use in php -

i want input 2 testcase , the values 32 43 ,if 3 testcases

2 32 43

3 54 43 56

how can done html , php.

i stuck looping according number of tescses user gives..

i have java version of code ..

// number of testcases system.out.println("enter number of test cases"); number = integer.parseint(in.readline());      // loops in many time testcase specified ans stores in array   for(int n=1 ;n<number;n++,i++)      {           system.out.println("enter n , k value testcase:"+n);           myarray[i] = integer.parseint(in.readline());       } 

assuming input field testcase , values insert blankspace separated , form submitted via post method, can array -

$testcases = explode(' ', $_post['testcase']);