小编nir*_*ala的帖子

我Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 141954624 bytes)在计算所有行mysql表时遇到问题

$query = $db->query("SELECT * FROM table");
$count = $db->num_rows($query);

echo $count;

总行数约17k,我得到了Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 141954624 bytes).让我知道,如何解决它.

目前我的代码是这样的:

<?php 
$qall = $db->query("SELECT * FROM location_code 
WHERE 
StateCode='".$secureStateCode."'");
while($fall = $db->fetch($qall)) {
?>
<tr>
  <th><?php echo $fall['StateCode']; ?></th>
  <td><?php echo $fall['StateName']; ?></td>
  <td>
  <?php
    $query = $db->query("SELECT COUNT(*) AS `male_count` 
    FROM `all_users` 
    WHERE `Sex`='M' 
    AND 
    `StateCode`='{$fall['StateCode']}'");
    $data  = $db->fetch($query);
    echo $data['male_count']; 
    ?>
  </td>
  <td>
  <?php
    $query = $db->query("SELECT COUNT(*) AS `female_count` 
    FROM `all_users` 
    WHERE `Sex`='F' 
    AND 
    `StateCode`='{$fall['StateCode']}'");
    $data  = $db->fetch($query);
    echo $data['female_count']; 
    ?>
  </td>
  <td>Total male_count + female_count</td>
</tr>
<?php } ?>

如何组合这些查询并使其加载速度更快,以满足男性和女性的需求.目前我有大约50万用户.