PHP output the day before last month the previous quarter

<?phpecho  "<pre>"; Echo date ("Y-m-d", Strtotime ("Now"),  "\ n";echo  "<pre>"; Echo date ("y-m-d", Strtotime (" -1 week monday")),  "\ n";echo  "<pre>";echo  Date ("Y-m-d", Strtotime (" -1 week sunday")),  "\ n";echo  "<pre>"; Echo date ("y-m-d", Strtotime ("+0 week monday")),  "\ n";echo  "<pre>"; Echo date ("Y-m-d", Strtotime ("+0  week sunday "), " \ n ";echo " <pre> ";echo " ********* month: "; Echo date (' n ');  echo  "<pre>";echo  "********* week:"; Echo date ("w"); echo  "<pre>"; echo  "********* Days of the Month:"; Echo date ("T");echo  "<pre>";echo  ' <br> last week:<br> '; Echo date ("Y-m-d h:i:s", Mktime (0, 0 , 0,date ("M"), Date ("D")-date ("W") +1-7,date ("Y"))) , "\ n"; Echo date ("Y-m-d h:i:s", Mktime (23,59,59,date ("M"), Date ("D")-date ("W") +7-7,date ("Y")), "\ n"; echo  "<pre>"; ECho  ' <br> this week:<br> '; Echo date ("Y-m-d h:i:s", Mktime (0, 0 , 0,date ("M"), Date ("D")-date ("W") +1,date ("Y")), "\ n"; Echo date ("Y-m-d h:i:s", Mktime (23,59,59,date ("M"), Date ("D")- Date ("W") +7,date ("Y")), "\ n";echo  "<pre>";echo  ' <br> last month:<br> '; Echo date (" Y-m-d h:i:s ", Mktime (0, 0 , 0,date (" M ") -2,1,date (" Y "))," \ n "; Echo date (" Y-m-d h:i : S ", Mktime (23,59,59,date (" M ") -1,0,date (" Y "))," \ n ";echo " <pre> ";echo  ' <br> last month:<br> ' ; Echo date ("Y-m-d h:i:s", Mktime (0, 0 , 0,date ("M") -1,1,date ("Y")), "\ n";echo  Date ("Y-m-d h:i:s", Mktime (23,59,59,date ("M")  ,0,date ("Y")), "\ n";echo  "<pre>";echo  " <br> this month:<br> '; Echo date ("Y-m-d h:i:s", Mktime (0, 0 , 0,date ("M"), 1,date ("Y" )), "\ n"; Echo date ("Y-m-d h:i:s", Mktime (23,59,59,date ("M"), Date ("T"), Date ("Y")), "\ n";echo  " <pre> ";  echo  "<pre>", $season  = ceil ((Date (' n '))/3) -2;//last quarter was the quarter echo  ' <br> quarter:<br> ' ; Echo date (' Y-m-d h:i:s ',  mktime (0, 0, 0, $season *3-3+1,1,date (' Y ')), "\ n";echo  Date (' Y-m-d h:i:s ',  mktime (23,59,59, $season *3,date (' t ', Mktime (0, 0 , 0, $season *3,1, Date ("Y"))), date (' Y ')), "\ n";  echo  "<pre>"; echo  "<pre>"; $season  =  ceil ((Date (' n '))/3) -1;//last quarter was the quarter echo  ' <br> last quarter:<br> '; echo date (' Y-m-d h:i:s ',  mktime (0, 0, 0, $season *3-3+1,1,date (' Y ')), "\ n"; echo date (' Y-m-d h:i:s ',  mktime (23,59,59, $season *3,date (' t ', Mktime (0, 0 , 0, $season *3,1,date ("y")), date (' Y ')), "\ n";   echo  "<pre>";echo  $season  = ceil ((Date (' n '))/3)///month is the first quarter echo  ' <br> This quarter:<br> '; echo date (' Y-m-d h:i:s ',  mktime (0, 0, 0, $season *3-3+1,1,date (' Y '))), " \ n "; echo date(' Y-m-d h:i:s ',  mktime (23,59,59, $season *3,date (' t ', Mktime (0, 0 , 0, $season *3,1,date (" Y ")), date (' Y '))," \ n ";  $season  = ceil ((Date (' n '))/3) +1;//Month is the first quarter echo  ' <br> next quarter:< Br> '; echo date (' Y-m-d h:i:s ',  mktime (0, 0, 0, $season *3-3+1,1,date (' Y ')), "\ n"; Echo  date (' Y-m-d h:i:s ',  mktime (23,59,59, $season *3,date (' t ', Mktime (0, 0 , 0, $season * 3,1,date ("Y"))), date (' Y ')), "\ n"; echo  "<pre>";? >

PHP output the day before last month the previous quarter