save(str_replace('.php', '.xlsx', __FILE__)); echo date('H:i:s') , " File written to " , str_replace('.php', '.xlsx', __FILE__) , PHP_EOL; // Echo memory peak usage echo date('H:i:s') , " Peak memory usage: " , (memory_get_peak_usage(true) / 1024 / 1024) , " MB" , PHP_EOL; // Echo done echo date('H:i:s') , " Done writing files" , PHP_EOL;