Minus 1 year php

$year = new DateTime(date('Y-m-d')); // gets current date
$interval = new DateInterval('P1Y');
$year->sub($interval); // subtract 1 year with $interval

// var_dump($year->format('Y')); or var_dump($year->format('Y-m-d'));

Php date format minus 1 day

date('Y-m-d',(strtotime ( '-1 day' , strtotime ( $date) ) ));

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