The quoted_printable_decode() function in PHP 8.4 and 8.5 works exactly the same as in previous versions. Its core purpose is to convert a quoted-printable encoded string (commonly found in email content) back into an 8-bit binary string.
Functionality
This function is primarily used when processing email content. Quoted-printable encoding converts non-ASCII characters (like é or €) into =XX format to ensure safe transmission through email systems. quoted_printable_decode() reverses this process, restoring the readable original text.
Basic Usage Example
<?php
$encoded = "M=C3=B6chten Sie ein paar =C3=84pfel?";
$decoded = quoted_printable_decode($encoded);
echo $decoded;
?>
This example demonstrates the decoding of German characters, with the result identical to the official PHP documentation.