strtotime php get current month code example

Example 1: php start of day epoch

$beginOfDay = strtotime("today", $timestamp);
$endOfDay   = strtotime("tomorrow", $beginOfDay) - 1;

Example 2: php get start of today

$beginOfDay = strtotime("today");
//to format
//$beginOfDay = date("Y-m-d H:i:s",strtotime('today'));