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Editorial Team
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Asked: 2026-06-06T20:47:12+00:00

As I have installed cron run the same script every minute. At the same

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As I have installed cron run the same script every minute. At the same time a script is executed several times.

There is such a part:

$query = mysql_query("select distinct `task_id` from tasks_pending where `checked`='0' and `taken`='0' limit 50");

Then, the obtained values ​​set “taken = 1”

Since several processes are executed at the same time the request Return the same data for different processes. Is it possible to somehow disable this part of her time to can perform only one process?

Sorry for bad English.

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1 Answer

  1. Editorial Team

    Use SELECT FOR UPDATE and it will block another process to select the same rows, before they are updated

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