PHP: Formatting Date Specified as YYYY-MM-DDT00:00:00

public function formatDate($date, $daysToAdd)
{
   $dateTime = new DateTime($date); 
   
   // Change the format accordingly  
   $dateTimeFormatted = $dateTime->format('Y-m-d h:m:s');
   return str_replace(' ', 'T', $dateTimeFormatted);
}

JavaScript: Constructing a Simple JSON Object Dynamically

1. Create an initial JSON object with a single element and an array:

   // {$id} is a PHP variable but it can be anything else
   jsonObj = {"id" : "{$id}", "myArray": []};

2. Construct the JSON object
   item = {}
   item ["id"] = "some Id";
   item ["value"] = "Some Value";
   jsonObj.myArray.push(item);

3. Output JavaScript:
   Object {id: "564f48ba-e9d5-463a-2325-58f91c653aa8", myArray: Array(1)}
   
   where myArray is broken down as follows:
   myArray: Array(3)
      0: Object
         id: "Some Id",
         value: "Some Value"

4. Output PHP:
   Array
   ( 
     [id] => 564f48ba-e9d5-463a-2325-58f91c653aa8
     [myArray] => Array
     (
          [0] => Array
          (
               [id] => Some Id
               [value] => Some Value
          )
     )
   )

PHP: Escaping Next Line (LF , CR)

preg_split('/\n|\r\n?/', $myString);

SUGARCRM: Querying Results using Raw SQL Statements

$sql = "SELECT id FROM accounts WHERE deleted = 0";

$result = $GLOBALS['db']->query($sql);

while($row = $GLOBALS['db']->fetchByAssoc($result) )
{
    //Use $row['id'] to grab the id fields value
    $id = $row['id'];
}

https://support.sugarcrm.com/Documentation/Sugar_Developer/Sugar_Developer_Guide_7.8/Data_Framework/Database/DBManagerFactory/ 

SUGARCRM: Getting blank Page on Entry Point

Make sure your Entry point is registered in your instance:

/custom/Extension/application/Ext/EntryPointRegistry/<your entry point>

SUGARCRM 7.8: Obtaining Field Labels based on Module Names

require_once('include/utils.php');
$label = translate('LBL_KEY', 'Accounts');

https://support.sugarcrm.com/Documentation/Sugar_Developer/Sugar_Developer_Guide_7.8/Architecture/Languages/Module_Labels/index.html