Answers for "how to get data of last day, week, month, year using php"

php get day of week

date('w'); //gets day of week as number(0=sunday,1=monday...,6=sat)

//note:returns 0 through 6 but as string so to check if monday do this:
if(date('w') == 1){
	echo "its monday baby";
}

check if is the last day of the month php

if(gmdate('t') == gmdate('d')){
    echo 'Last day of the month.';
}