Getting a variable that exists sometimes and doesn't at other times - php

Question

My problem is in my code I'm having problems with it calculating something with a variable that does not exists some times and some times does.
I want it to give me back number of deaths if empty '0' if not prints me what is in the variable, but for some reason i get this:
E_NOTICE : type 8 -- Undefined property: stdClass::$numDeaths -- at
line 66 E_WARNING : type 2 -- Division by zero -- at line 71
here is my code:
<?php
$apiKey = 'e9044828-20e3-46cc-9eb5-545949299803';
$summonerName = 'tamini';
$new = rawurlencode($summonerName);
$news = str_replace(' ', '', $summonerName);
$str = strtolower($news);
// get the basic summoner info
$result = file_get_contents('https://euw.api.pvp.net/api/lol/euw/v1.4/summoner/by-name/' . $new . '?api_key=' . $apiKey);
$summoner = json_decode($result)->$str;
$id = $summoner->id;
// var_dump($summoner);
?>
<?php
$clawzz = file_get_contents('https://euw.api.pvp.net/api/lol/euw/v1.3/game/by-summoner/' . $id . '/recent?api_key=' . $apiKey);
$gazazz = json_decode($clawzz);
?>
<?php
$entrieszz = $gazazz->games;
usort($entrieszz, function($ac,$bc){
return $bc->createDate-$ac->createDate;
});
foreach($entrieszz as $statSummaryzz){
$gamemodekillz = $statSummaryzz->stats->championsKilled;
$gamemodedeathz = $statSummaryzz->stats->numDeaths;
$gamemodeassistz = $statSummaryzz->stats->assists;
$kdamatchhistoryeach = ($gamemodekillz + $gamemodeassistz) / $gamemodedeathz;
echo ' <br>';
echo $gamemodekillz;
echo ' <br>';
if ($gamemodedeathz == 0){
echo '0';
}
else {
echo $gamemodedeathz ;
}
echo ' <br>';
echo $gamemodeassistz;
echo ' <br>';
if ($gamemodedeathz == 0){
echo 'Perfect Score';
}
else {
echo $kdamatchhistoryeach ;
}
?>

Answer 1

You need to check if the value exist:
if( isset($statSummaryzz->stats) && isset($statSummaryzz->stats->numDeaths) ) {
$gamemodedeathz = $statSummaryzz->stats->numDeaths;
}