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5.9.2017 – Php is a an easy-to-learn programming language. What might come in hand to many internet programmers, are cron jobs, that might be run simultaneously using cron, in one-minute intervals. One problem may arrive, when 2 same scripts start to run in the same time. PHP function getmypid may come in hand then, because this function is able to provide you current ID of running script. When the script is running, you can easily take ID of current script, and work with this function in another scripts. For example, you can easily save ID of running script, and calling cron job can first look, whether previous instance is still running. Based on this information, cron job can start to run a new instance, or decide to stop another instance, until previous ID is not available in the system (the cron job finished).