在PHP中创建函数包括while循环

Question

i have this code to call posts from database

<?php
    $q = "SELECT * FROM posts WHERE user_id = '$user_info[id]'  ORDER BY id DESC";
    $r = mysqli_query($dbc, $q);

    while($post_info = mysqli_fetch_assoc($r)) { ?>

//html

it works fine but i like to create a function includes the query and the while loop and move it to functions.php and keep the html code in template.php but I don't know how with the while loop..

  function data_post($dbc, $user_info['id']){

    $q = "SELECT * FROM posts WHERE user_id = '$user_info[id]'  ORDER BY id DESC";
    $r = mysqli_query($dbc, $q);

    while($post_info = mysqli_fetch_assoc($r))

   return $post_info
 }

I have tried this but there is no result

Answer 1

Try this:

Function Body

function data_post($dbc, $user_id){    
    $q = "SELECT * FROM posts WHERE user_id = '$user_id' ORDER BY id DESC";
    $r = mysqli_query($dbc, $q);

    $arrayPost = array();
    while($post_info = mysqli_fetch_assoc($r)){
        $arrayPost[] = array('id' => $post_info['postId'], 'name' => $post_info['postName']);
        // or whatever data you want to return of post, insert in array
    }
    return $arrayPost;
}

Function Calling

$userPostArray = data_post($dbc, $user_info['id']);

Answer 2

function ss()
 {
   ...........

  while($post_info = mysqli_fetch_assoc($r))
  { 
    $new_array[]=$post_info; 

  } 

  return $new_array;

 }

And return the $new_array outside of the while loop

And get the value like this 

  $mm= ss();

 print_r($mm);   here you get that $new_array values