Setup
setTitle($title='')
setSubject($subject='')
setAuthor($author='')
setCompany($company='')
setKeywords($keywords='')
setDescription($description='')
setTempDir($tempdir='')
setRightToLeft($isRightToLeft=false)
Output
writeToStdOut()
writeToString()
writeToFile($filename)
Cell writing
writeSheetHeader($sheet_name, array $header_types, $col_options = null)
writeSheetRow($sheet_name, array $row, $row_options=null)
countSheetRows($sheet_name = '')
markMergedCell($sheet_name, $start_cell_row, $start_cell_column, $end_cell_row, $end_cell_column)
writeSheet(array $data, $sheet_name='', array $header_types=array())
That's all. Nothing more you can use or need.
These are allowed for style
font=Arial|Courier New|Times New Roman|Comic Sans MS
font-size=10
font-style=bold
fill=#eee
halign=left|right|center|none
border=left,right,top,bottom
font-style=bold|italic|underline|strikethrough
color=#f00
fill=#ffc