PHP vfprintf() Function

The vfprintf() function is an inbuilt function in PHP that is used to write formatted information to a stream, such as a file or the output screen.

Syntax:

vfprintf(resource $stream, string $format, array $values): 

Parameters: This function accepts three parameters that are described below.

• $stream: This parameter tells you where you write the string. It could be a file or a standard output like a screen.
• $format: This is a template that shows how you want to arrange your data. It contains placeholders (like %d, %s, etc.) that represent where your actual data will go.
• $values: This array holds the actual data that will be inserted into the placeholders of the format string.

Return Values: The vfprintf() function returns the count of the character written to the screen. It will return an integer type

Program 1: The following program demonstrates the vfprintf() function.

Successfully wrote 22 characters to the file.

Program 2: The following program demonstrates the vfprintf() function.

Hello Geeks for Geeks .
Successfully wrote 24 characters to the screen.

Reference:https://www.php.net/manual/en/function.vfprintf.php