Help solve the problem related to the array! (For beginners .)

Help solve the array problem! (Cainiao...) that is to say, the current data of a variable $ p is 221,567,568,569,572,573,140, 1723, 1724,1725, 1726,1727, 1728,1729, 1730,1731, 1732,1733, 2586,13587 & nb to help solve the problem of! (Cainiao asked ..)
That is to say, the data of $ p is 221,567,568,569,572,573,140, 1723, 1724,1725, 1726,1727, 1728,1729, 1730,1731, 1732,1733, 2586,13587.
This is from echo...
How to define an array now... put the data one by one into the data...
$ S [0] = 221, $ s [1] = 567 ............


Please help me!

------ Solution --------------------
$ P = "221,567,568,569,572,573,140, 1723, 1724,1725, 1726,1727, 1728,1729, 1730,1731, 1732,1733, 2586,13587"
$ S = explode (',', $ p );
Print_r ($ s );


------ Solution --------------------
$ P = '2017, 1723, 1724,1725, 1726,1727, 1728,1729, 1730,1731, 1732,1733, 2586,13587 ';
$ S = explode (',', $ p );
Print_r ($ s );

-------------------

---------- PHP debugging ----------
Array
(
[0] = & gt; 221
[1] => 567.
[2] => 568.
[3] = & gt; 569
[4] = & gt; 572
[5] = & gt; 573
[6] = & gt; 1408
[7] = & gt; 1723
[8] = & gt; 1724
[9] = & gt; 1725
[10] => 1726.
[11] => 1727.
[12] = & gt; 1728
[13] = & gt; 1729
[14] => 1730.
[15] = & gt; 1731
[16] = & gt; 1732
[17] => 1733.
[18] = & gt; 2586
[19] = & gt; 13587
)

Output completed (time consumed: 0 seconds)-normal termination
------ Solution --------------------
$ P = "221,567,568,569,572,573,140, 1723, 1724,1725, 1726,1727, 1728,1729, 1730,1731, 1732,1733, 2586,13587"

Print_r (split (",", $ p ));

This works too ..
------ Solution --------------------
$ P = "221,567,568,569,572,573,140, 1723, 1724,1725, 1726,1727, 1728,1729, 1730,1731, 1732,1733, 2586,13587 ";
$ S = explode (",", $ p );
-------------
Echo $ s; // output array
-------------
In this way, the data in $ p is saved to the array $ s: $ s [0] = 221; $ s [1] = 567 ......... $ [19] = 13587;

------ Solution --------------------
$ P = "221,567,568,569,572,573,140, 1723, 1724,1725, 1726,1727, 1728,1729, 1730,1731, 1732,1733, 2586,13587"
$ S = explode (',', $ p );
Print_r ($ s );
------ Solution --------------------
... Upstairs

Explode and the bird function. I'm still using split.
My daily php is disgusting. the same function has N functions.

By the way, we will ask you at 20:30:20 on January 9 ,.
How to output 2000-01-09
Is explode used to separate?
Is there a function similar to datevalue in asp?