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PHP Tutorial Addresses Telegram Bot Rate Limits to Prevent Broadcast Failures

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Telegram enforces strict rate limits on bots sending broadcast messages, leading to HTTP 429 errors and failed deliveries if ignored. A naive PHP script that loops through users without pausing will quickly be throttled by the API, causing incomplete broadcasts. To handle this, developers must parse the 'retry_after' parameter in Telegram's error response and pause execution accordingly. This tutorial demonstrates how to build a rate-aware queue system in PHP to ensure reliable message delivery without triggering API restrictions.

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