session - PHP Post, Redirect, Get Issues -


i created form takes birthday , spits out bunch of data relative date. works great in chrome, i'm not getting output in browsers firefox , safari. i'm not receiving php errors, think problem ff & safari not setting session variables intended. i'm new php first time using method, here's i'm using:

session_start(); error_reporting(e_all); ini_set('display_errors',1);  if(count($_post) > 0) {     $_session['dob-month'] = $_post['dob-month'];     $_session['dob-day'] = $_post['dob-day'];     $_session['dob-year'] = $_post['dob-year'];          if(isset($_post['submit'])){     $_session['submit'] = 1;}      header("http/1.1 303 see other");     header("location: " . $_server['request_uri']);     //header("location: " . $_server['request_uri']);     die(); } elseif (isset($_session['dob-month'])||isset($_session['dob-day'])||isset($_session['dob-year'])){     $month = $_session['dob-month'];     $day = ltrim(sanitizenuminput($_session['dob-day']),'0');      $year = sanitizenuminput($_session['dob-year']);     $submit = $_session['submit'];      /*         put database-affecting code here.     */      session_unset();     session_destroy(); }else{     $month = 0;     $day = 0;     $year = 0;   }

form

<form method="post" id="birthday-form" action="/calculator/"><div class="dobrow"><div class="dobmonth"> <select name="dob-month"><option value="">month</option><option value="1">january</option><option value="2">february</option><option value="3">march</option><option value="4">april</option><option value="5">may</option><option value="6">june</option><option value="7">july</option><option value="8">august</option><option value="9">september</option><option value="10">october</option><option value="11">november</option><option value="12">december</option></select></div><p></p><div class="dobday"><input type="text" name="dob-day" maxlength="2" placeholder="day"/></div><p></p><div class="dobyear"><input type="text" maxlength="4" max="2015" name="dob-year" placeholder="year"/></div><p></p><div class="dobsubmit"><input type="submit" name="submit" value="calculate"/></div><p></div><p></p></form>

the line after session start thrown in there check php errors, , i'm not receiving any. receiving undefined variable errors $month, $day, , $year on initial page load before sessions had been set, why set 0 default.

if me figure out why isn't working correctly i'd appreciate help. i've been trying function work correctly weekend, i'm struggling , not sure else do. in advance.


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