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3,559 matching resources
3,559 resourcesContent Area → Category

Sending HTML Email Safely

HTML email uses a MIME HTML body, safely escaped dynamic text and a plain-text alternative. Untrusted text in email markup can inject unwanted links or layout; email clients support only li…

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Using cURL to Call External APIs

PHP cURL creates an HTTP transfer, sets transport options and separates network failures from HTTP status. Configure connect/total timeouts, TLS verification, redirect policy and allowed ou…

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Validating Email Addresses in PHP

Email-address validation checks syntactic acceptability; it does not establish ownership or deliverability. Do not concatenate validated addresses into arbitrary raw headers or assume filte…

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Verifying Incoming Webhooks

Incoming webhooks require signature verification over the exact raw body before parsing or applying changes. A correct HMAC alone does not stop replayed messages; validate time windows and…

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