SQL不选择所有行

Question

I am trying to go through this entire table and echo out all of the emails

Here is my query

SELECT meta_value FROM wp_usermeta WHERE meta_key ='user_email'

Here is a picture of when I execute it in Phpmyadmin

And here is the output when I run my php script

array(8) {
  [0]=>
  string(3) "781"
  ["umeta_id"]=>
  string(3) "781"
  [1]=>
  string(2) "36"
  ["user_id"]=>
  string(2) "36"
  [2]=>
  string(10) "user_email"
  ["meta_key"]=>
  string(10) "user_email"
  [3]=>
  string(22) "ndroyal@eagleray.co.il"
  ["meta_value"]=>
  string(22) "ndroyal@eagleray.co.il"
}

You can clearly see there is way more than 8 rows, I can't figure this out any input would be greatly appreciated!

$data = $db->fetch_array("SELECT * FROM `wp_usermeta` WHERE `meta_key`='user_email'");
var_dump($data);

DB Class:

<?php
class DB {

    function __construct() {
        global $dbase;
        $this->mysqli = new mysqli($dbase['host'], $dbase['user'], $dbase['pass'], $dbase['name']);
        if($this->mysql->connect_error) {
            die('Unable to Connect to Database');
        }
    }
    function query($i) {
        return $this->mysqli->query($i);
    }
    function fetch_array($i) {
        if(!is_object($i)) {
            // create $i as an object!
            $i = $this->query($i);
        }
        return $i->fetch_array();
    }
    function num($i) {
        if(!is_object($i)) {
            // create $i as an object!
            $i = $this->query($i);
        }
        return $i->num_rows;
    }
}
?>

Answer 1

$db->fetch_array only returns the first row of the result. You have to use a different method to loop through all selected rows, though you'll have to figure out which method that is on your own since we don't know your database class (of which $db is an instance of).

edit: The following code should work:

$result = $db->query(your query);
while ($row = $result->fetch_array()) {
    // do something with $row
}