How to Handle YouTube API Errors Gracefully in PHP

Working with the YouTube Data API v3 is essential for video platforms like TrendVidStream . But the API has quirks: rate limits, quota exhaustion, intermittent failures, and region-specific errors. Here's how to handle them all. Common Error Types HTTP Code Error Cause Recovery 400 Bad Request Invalid parameter Fix request 403 Forbidden Quota exceeded or API key invalid Wait or rotate key 404 Not Found Video/resource deleted Skip and log 429 Too Many Requests Rate limit hit Exponential backoff 500 Internal Server Error YouTube backend issue Retry with backoff 503 Service Unavailable Temporary outage Retry with backoff Error-Resilient YouTube Client <?php class YouTubeClient { private string $apiKey ; private int $maxRetries ; private int $quotaUsed = 0 ; private const DAILY_QUOTA = 10000 ; // Default free tier public function __construct ( string $apiKey , int $maxRetries = 3 ) { $this -> apiKey = $apiKey ; $this -> maxRetries = $maxRetries ; } public function getTrending ( string $reg