<?php

register_tick_function(function(){
  if (isset($GLOBALS["developer_debug"]) && $GLOBALS["developer_debug"] == 'active'){
    $backtrace = debug_backtrace();
    $line = $backtrace[0]['line'] - 1;
    $file = $backtrace[0]['file'];

    if ($file == __FILE__) return;

    static $fp, $cur, $buf;
    if (!isset($fp[$file])) {
        $fp[$file] = fopen($file, 'r');
        $cur[$file] = 0;
    }

    if (isset($buf[$file][$line])) {
        $code = $buf[$file][$line];
    } else {
        do {
            $code = fgets($fp[$file]);
            $buf[$file][$cur[$file]] = $code;
        } while (++$cur[$file] <= $line);
    }

    $line++;
    if (defined('ERR_LOG')){ $error_log = ERR_LOG; } else {
      $error_log = "../logs/error_log";
    }
    error_log("n==========================================================n", 3, $error_log);
    error_log("n $file : $line :: $code n", 3, $error_log);
    error_log("n Variables: n" . print_r(get_defined_vars(), true) . "n", 3, $error_log);
    $GLOBALS["_TROUBLESHOOTING"][] = "<code>n $file : $line ::: ". htmlentities($code, ENT_QUOTES) . " n</code>";
  }
}, ["_SERVER" => $_SERVER, "_COOKIE"=>$_COOKIE, "_REQUEST"=>$_REQUEST, "_SESSION"=>$_SESSION, "_GLOBALS"=>$GLOBALS]);
// To use...
// declare(ticks=1);
// include_once('debug.php');

$(document).ready(function() {
  var dev_top_button = document.createElement("Button");
  dev_top_button.innerHTML = "Top Dev Data";
  dev_top_button.style = "top:0;right:75%;position:absolute;z-index: 9999"
  document.body.appendChild(dev_top_button);

  var dev_bottom_button = document.createElement("Button");
  dev_bottom_button.innerHTML = "Bottom Dev Data";
  dev_bottom_button.style = "top:0;right:50%;position:absolute;z-index: 9999"
  document.body.appendChild(dev_bottom_button);

  $(dev_top_button).click(function(){
    $("#debug_top").toggle();
  });

  $(dev_bottom_button).click(function(){
    $("#debug_bottom").toggle();
  });
});

echo "<div class='debug_outer' id='debug_top'><h3>Developer Information</h3><div class='debug_inner'><pre>";

        if (isset($GLOBALS['_TROUBLESHOOTING']) && is_array($GLOBALS['_TROUBLESHOOTING']) && ! empty($GLOBALS['_TROUBLESHOOTING'])) {

            $troubleshooting_return_array = $GLOBALS['_TROUBLESHOOTING'];

        } else {

            $troubleshooting_return_array = ['Empty'];
        }

        echo print_r(["_COOKIE" => $_COOKIE, "_REQUEST" => $_REQUEST, "_SESSION" => $_SESSION, "_TROUBLESHOOTING" => $troubleshooting_return_array, "_SERVER" => $_SERVER, "_GLOBALS" => $GLOBALS], true);
        echo '</pre></div></div>';