What are the common pitfalls faced by beginners when trying to generate Excel files using PHP?

One common pitfall faced by beginners when generating Excel files using PHP is not properly setting the content type header to 'application/vnd.ms-excel'. This can result in the Excel file not being downloaded or opened correctly. To solve this issue, make sure to set the content type header before outputting any Excel data. 

<?php
// Set content type header for Excel file
header('Content-Type: application/vnd.ms-excel');

Keywords

PHPExcel file format data formatting memory limit compatibility

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