MySQL/PHP Update statement outputting white page with no errors -


im trying update records in table followin, problem browser outputs empty white page no source, can see i'm doing wrong? 

<?php  require 'dbconfig.php';  //always place code @ top of page session_start(); if (!isset($_session['id'])) {     // redirection login page twitter or facebook     header("location: index.php"); }    function safe($value){    return mysql_real_escape_string($value); }  // variables $_session['username']; $_session['oauth_provider']; $uid = $_session['id']; $email = safe($_post["email"]); $credits = safe($_post["credits"]);     $query = mysql_query("update users set email= '$email' id='$uid'") or die(mysql_error());   ?>

you have assigned variable query, not running it. 

 $query = mysql_query("update users set email= '$email' id='$uid'") or die(mysql_error());

so, above redundant code. run it, should call $query, this

if($query){ echo 'updated performed'; }else{ echo 'update failed'; }

note i'm not encouraging use mysql_ functions weak, vulnerable , deprecated. intead should learn more pdo


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