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Tag: http-status-code-400

PayPal IPN HTTP ERROR 400 – PHP – Using PayPal GIT Code

PayPal Sandbox testing continuously provides the following error: http 400 – Bad Request Your browser sent a request that this server could not understand. I am using the git provided sample code from PayPal and am unable to get around this error. Code [PayPalIPN.php] Code [PaypalListener.php] When using PayPals IPN Simulator, the following data gets posted to the PayPalIPN page:

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