计算多个MySQL表中的行数？

Question

Here's my current code:

<?php
$identifiers_link = mysql_connect("localhost", "XXXXX", "XXXXX");
mysql_select_db("XXXXX", $identifiers_link);

$count_0 = mysql_query("SELECT COUNT(hash_id) FROM apis_hashes_0", $identifiers_link);
$count_1 = mysql_query("SELECT COUNT(hash_id) FROM apis_hashes_1", $identifiers_link);
$count_2 = mysql_query("SELECT COUNT(hash_id) FROM apis_hashes_2", $identifiers_link);
$count_3 = mysql_query("SELECT COUNT(hash_id) FROM apis_hashes_3", $identifiers_link);
$count_4 = mysql_query("SELECT COUNT(hash_id) FROM apis_hashes_4", $identifiers_link);
$count_5 = mysql_query("SELECT COUNT(hash_id) FROM apis_hashes_5", $identifiers_link);
$count_6 = mysql_query("SELECT COUNT(hash_id) FROM apis_hashes_6", $identifiers_link);
$count_7 = mysql_query("SELECT COUNT(hash_id) FROM apis_hashes_7", $identifiers_link);
$count_8 = mysql_query("SELECT COUNT(hash_id) FROM apis_hashes_8", $identifiers_link);
$count_9 = mysql_query("SELECT COUNT(hash_id) FROM apis_hashes_9", $identifiers_link);
$count_a = mysql_query("SELECT COUNT(hash_id) FROM apis_hashes_a", $identifiers_link);
$count_b = mysql_query("SELECT COUNT(hash_id) FROM apis_hashes_b", $identifiers_link);
$count_c = mysql_query("SELECT COUNT(hash_id) FROM apis_hashes_c", $identifiers_link);
$count_d = mysql_query("SELECT COUNT(hash_id) FROM apis_hashes_d", $identifiers_link);
$count_e = mysql_query("SELECT COUNT(hash_id) FROM apis_hashes_e", $identifiers_link);
$count_f = mysql_query("SELECT COUNT(hash_id) FROM apis_hashes_f", $identifiers_link);

$identifiers_count = $count_0 + $count_1 + $count_2 + $count_3 + $count_4 + $count_5 + $count_6 + $count_7 + $count_8 + $count_9 + $count_a + $count_b + $count_c + $count_d + $count_e + $count_f;

echo $identifiers_count;

?>

What I'm trying to do is add up how many rows are in several tables.

The problem I'm having is that every time I refresh the page, the number is either 200 or 216. However, the actual number of rows it should be showing is 14.

I have no idea what could be causing this to happen, I've run each of the queries directly in phpMyAdmin and they show the correct results. Any idea?

EDIT: In case it makes a different, some of the tables are currently empty.

Answer 1

If you need an estimate you could try something like this:

SELECT SUM(TABLE_ROWS) FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_NAME LIKE 'apis_hashes_%';

Answer 2

You are using count so you have to run a loop. Your every query should look like this

$query_0 = mysql_query("SELECT COUNT(hash_id) as count FROM apis_hashes_0", $identifiers_link);
while($row=mysql_fetch_array($query_0)){
$count_0 = $row['count'];
}

Hope this helps you