test work

test work

<?php

/**
 * Instructions:
 * Write a solution in PHP:
 *
 * How your implementation works:
 * Your function will take two arguments, ($prevArray, $currArray), flattens the objects inside of prevArray and currArray to 1 level of
 * depth, and return an HTML Table in string form of the values.  The HTML table you return has a column header which is a superset of all keys in 
 * all the objects in the currArray.  Any values that have changed from the prevArray to the currArray (ie field value changed or is a 
 * new key altogether) should be bolded. In the case that the value has been removed altogether from the prevArray to the currArravy, 
 * you will write out the key in bold DELETED.
 * 
 * Rules:
 * 1. The arrays are arbitrarily deep (see common questions for explanation of arbitrarily deep).
 * 2. The currArray could have more or potentially even be in a different index order.  You cannot depend solely on array index for  
 * comparison.  However, you can assume that each object in the arrays will have an "_id" parameter.  Unless the currArray has no  
 * object with the matching "_id" parameter (for example if the whole row has changed).
 * 3. Do not create global scope.  We have a test runner that will iterate on your function and run many fixtures through it.  If you 
 * create global scope for 1 individual diff between prevArray to currArray you could cause other tests to fail.  
 *
 * Common Questions:
 * 1. Can I use outside packages to solve (e.g. Composer)?  Yes.  You can use any packages you want to solve the solution.  
 * 2. Can I use google or outside resources (e.g. StackOverflow, GitHub)?  Yes.  Act as you would in your day job.
 * 3. What does arbitrarily deep mean? The $prevArray or $currArray can have objects inside of objects at different levels of depth. 
 *    You will not know how many levels of depth the objects could have, meaning your code must handle any kind of object.  Your 
 *    solution  must account for this.  Do not assume the examples below are the only fixtures we will use to test your code. 
 * 
 * @param $prevArray is a JSON string containing an array of objects
 * @param $currArray is a JSON string containing an array of objects
 * @return a string with HTML markup in it, should return null if error occurs.
 */
/*ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);*/

$prevArray = '[{"_id":1,"someKey":"RINGING","meta":{"subKey1":1234,"subKey2":52}}]';
$currArray = '[{"_id":1,"someKey":"HANGUP","meta":{"subKey1":1234}},{"_id":2,"someKey":"RINGING","meta":{"subKey1":5678,"subKey2":207,"subKey3":52}}]';

echo arrayDiffToHtmlTable( $prevArray, $currArray);

function arrayDiffToHtmlTable( $prevArray, $currArray) {
    //IMPLEMENT
   $prevArraydata = json_decode($prevArray);
   $currArraydata = json_decode($currArray);
   
   //$currArraydata=array_merge($prevArraydata,$currArraydata);
   
   $metakeys=array();
   
   foreach($currArraydata as $key=>$val)
   {
    
	 foreach($val->meta as $key2=>$val2)
	 {
	  $metakeys[]=$key2;
	 }
   }
    $metakeys=array_unique($metakeys);
	$htmlTableString='<table  border="1"><tr>';	
	$htmlTableString.='<th>_id</th>';
	$htmlTableString.='<th>someKey</th>';
	foreach($metakeys as $key3=>$va3)
	{
	$htmlTableString.='<th>'.$va3.'</th>';
	}
	$htmlTableString.='</tr>';
	
	
	foreach($currArraydata as $key4=>$val4)
	{
	$bold='';
		if($key4==1){ $bold='font-weight:bold;'; }
		$htmlTableString.='<tr style='.$bold.'>';
		$htmlTableString.='<td>'.$val4->_id.'</td>';
		$htmlTableString.='<td>'.$val4->someKey.'</td>';
			foreach($metakeys as $keyname)
			{
			 $htmlTableString.='<td>';
			 if($val4->meta->$keyname)
			 $htmlTableString.=$val4->meta->$keyname;
			 else 
			 {
			// print_r($prevArraydata[$key4]->meta->$keyname); exit;
			 if($prevArraydata[$key4]->meta->$keyname)
			 $htmlTableString.='<b>Deleted</b>';
			 }
			 $htmlTableString.='</td>';
			}
		$htmlTableString.='</tr>';
	}
	
	
	
	$htmlTableString.='</table>';
   
   

	
    return $htmlTableString;
}



// Example, Given the following data set:
//
//        echo arrayDiffToHtmlTable( $prevArray, $currArray);
//
//  OUTPUT (Note this is a text representation... output should be an HTML table):
//
//          _id               someKey          meta_subKey1        meta_subKey2        meta_subKey3
//            1              **HANGUP**             1234              **DELETED**
//          **2**            **RINGING**          **5678**             **207**             **52**
//
//  ** implies this field should be bold or highlighted.
//  !!! analyze the example carefully as it demonstrates expected cases that need to be handled. !!!
//
?>