What are some common issues when trying to receive HTTP headers in PHP scripts?

One common issue when trying to receive HTTP headers in PHP scripts is that the headers may not be properly set or sent by the client. To solve this, you can check if the headers are set using the `get_headers()` function and handle any missing headers accordingly. 

$headers = getallheaders();

if(isset($headers['HeaderName'])) {
    $headerValue = $headers['HeaderName'];
    // Do something with the header value
} else {
    // Handle missing header
}

Keywords

HTTP headers PHP scripts receiving issues troubleshooting

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