The quoted_printable_decode() function is an inbuilt function in PHP which is used to decode a quoted printable string in PHP into an 8-bit string.
string quoted_printable_decode( $str )
Parameters: This function accepts single parameter $str which is mandatory. It represents the string which need to find the 8-bit string.
Return Value: This function returns the 8-bit binary string.
Below program illustrates the quoted_printable_decode() function in PHP:
Application: This function is used in mail handling in PHP. Many a times the mails consist of quoted printable like =0A, =0D etc. Thus, PHP provides a built-in function to deal with such mails to produce plain 8-bit strings.