Question: how to convert csv file to xls file in php code?
Answer: Step 1: Download and install EasyXLS Excel Library for Java. To download the trial version of EasyXLS Excel Library, press the below button: ... 
Step 2: Install PHP/Java Bridge. ... 
Step 3: Setup EasyXLS library in Tomcat. ... 
Step 4: Run PHP code that converts CSV file to Excel.