你有：

> max_execution_time已禁用.只要需要,您的脚本将不会在该过程完成之前结束.

> memory_limit已禁用.内存中存储的数据量没有限制.

完成500条记录没有问题.这表明脚本在下一次cronjob迭代之前完成其过程.例如,如果您的cron每小时运行一次,则会在不到一小时的时间内处理500条记录.

如果您有一个将要处理大量记录的cronjob,那么请考虑向该进程添加锁定机制.仅允许脚本运行一次,并在上一个过程完成时重新启动.

在执行php脚本之前,您可以将脚本锁创建为shell脚本的一部分.或者,如果您无法访问服务器,则可以在php脚本中使用数据库锁定,如下所示.

class ProductCronJob

{

protected $lockValue;

public function run()

{

// Obtain a lock

if ($this->obtainLock()) {

// Run your script if you have valid lock

$this->syncProducts();

// Release the lock on complete

$this->releaseLock();

}

}

protected function syncProducts()

{

// your long running script

}

protected function obtainLock()

{

$time = new \DateTime;

$timestamp = $time->getTimestamp();

$this->lockValue = $timestamp . '_syncProducts';

$db = JFactory::getDbo();

$lock = [

'lock' => $this->lockValue,

'timemodified' => $timestamp

];

// lock = '0' indicate that the cronjob is not active.

// Update #__cronlock set lock = '', timemodified = '' where name = 'syncProducts' and lock = '0'

// $result = $db->updateObject('#__cronlock', $lock, 'id');

// $lock = SELECT * FROM #__cronlock where name = 'syncProducts';

if ($lock !== false && (string)$lock !== (string)$this->lockValue) {

// Currently there is an active process - can't start a new one

return false;

// You can return false as above or add extra logic as below

// Check the current lock age - how long its been running for

// $diff = $timestamp - $lock['timemodified'];

// if ($diff >= 25200) {

// // The current script is active for 7 hours.

// // You can change 25200 to any number of seconds you want.

// // Here you can send notification email to site administrator.

// // ...

// }

}

return true;

}

protected function releaseLock()

{

// Update #__cronlock set lock = '0' where name = 'syncProducts'

}

}