PHP | Hoja de cálculo_Excel_Writer | función addFormat()

La función addFormat() es una función incorporada en PHP | Spreadsheet_Excel_Writer que se utiliza para establecer el formato de una hoja de cálculo.

Sintaxis: 

Workbook::&addFormat( $properties = array() )

Parámetros: esta función acepta un solo parámetro $properties que acepta el valor de la array. Para configurar varios formatos, usamos sus funciones correspondientes como setBold() para negrita, setBorder() para bordes y muchas otras funciones.

Ejemplo 1:  

<?php
 
require_once 'Spreadsheet/Excel/Writer.php';
 
// Add Workbook
$workbook = new Spreadsheet_Excel_Writer();
 
// Add Format to spreadsheet
$format_bold =& $workbook->addFormat();
 
// Set Bold Format
$format_bold->setBold();
 
// Add Worksheet to Spreadsheet
$worksheet =& $workbook->addWorksheet();
 
$format_bold->setBorder(2);
 
// Write to Worksheet
$worksheet->write(0, 0, "Details of GeeksforGeeks
                     Contributors", $format_bold);
$worksheet->write(1, 0, "Author", $format_bold);
$worksheet->write(1, 1, "User Handle", $format_bold);
$worksheet->write(2, 0, "Sarthak");
$worksheet->write(2, 1, "sarthak_ishu11");
 
// Send .xlsx file to header
$workbook->send('test.xls');
 
// Close Workbook Object
$workbook->close();
?>

Producción: 

Ejemplo 2:  

<?php
 
require_once 'Spreadsheet/Excel/Writer.php';
 
// Add Workbook
$workbook = new Spreadsheet_Excel_Writer();
 
// Add Format to spreadsheet
$format_border =& $workbook->addFormat();
 
// Add Worksheet to Spreadsheet
$worksheet =& $workbook->addWorksheet();
 
// Set and Add Border Width
$format_border->setBorder(2);
 
// Set and Add Color to Border
$format_border->setBorderColor('red');
 
// Write to Worksheet
$worksheet->write(0, 0, "Details of GeeksforGeeks
                      Contributors", $format_bold);
$worksheet->write(1, 0, "Author", $format_border);
$worksheet->write(1, 1, "User Handle", $format_border);
$worksheet->write(2, 0, "Sarthak");
$worksheet->write(2, 1, "sarthak_ishu11");
 
// Send .xlsx file to header
$workbook->send('test.xls');
 
// Close Workbook Object
$workbook->close();
?>

Producción: 

Referencia: https://pear.php.net/manual/en/package.fileformats.spreadsheet-excel-writer.intro-format.php