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<?php $cd = new DateTime('31-10-2016'); echo "cd: " . $cd->format( 'Y-m-d' ) . "\n"; $cd->modify('previous month'); echo "cd: " . $cd->format( 'Y-m-d' ) . "\n";
Output for git.master, git.master_jit, rfc.property-hooks
cd: 2016-10-31 cd: 2016-10-01

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