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<?php $sourceFormat = 'd-m-Y'; $targetFormat = 'Y-m-d'; $value = '22-11-2017'; $datetime = \DateTime::createFromFormat($sourceFormat, $value); $output = $datetime != false ? date($targetFormat, $datetime->getTimestamp()) : $defaultValue; var_dump($output);
Output for git.master, git.master_jit, rfc.property-hooks
string(10) "2017-11-22"

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