How can debugging techniques be utilized effectively when encountering errors in PHP scripts that involve PDF display?

When encountering errors in PHP scripts that involve PDF display, debugging techniques can be utilized effectively by checking for syntax errors, ensuring all required libraries are included, and verifying that the PDF file path is correct. Additionally, using error logging functions like error_log() can help identify specific issues within the code. 

// Example PHP code snippet to display a PDF file using the PDF.js library

$pdfFilePath = 'example.pdf';

if (file_exists($pdfFilePath)) {
    header('Content-Type: application/pdf');
    readfile($pdfFilePath);
} else {
    error_log('PDF file not found: ' . $pdfFilePath);
    echo 'PDF file not found';
}

Keywords

PHP debugging PDF display error handling troubleshooting

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