fprintf

Function • Params and return types changed in PHP 8.0

Write a formatted string to a stream.

PHP 5
PHP 7
PHP 8.0
Improved
PHP 8.1
PHP 8.2-8.3
PHP 8.4
PHP 8.5
PHP 8.6

fprintf Function synopsis

fprintf(
    $stream,
    string $format,
    mixed ...$values
  ): int

Parameters

$stream
$format

Typestring

$values

Variadic, OptionalTypemixed

Return value

Typeint

Returns the length of the string written.

Changes to the fprintf Function

PHP 8.0

  • Return type added: int
  • Parameter type added for parameter #2 ($format): string
  • Parameter name of parameter #3 changed: $args to $values
  • Parameter type added for parameter #3 ($values): mixed
  fprintf(
      $stream,
-     $format,
+     string $format,
-     ...$args
+     mixed ...$values
-   )
+   ): int

fprintf Function Availability

PHP VersionAvailability
PHP 8.6Upcoming Release Yes
PHP 8.5Supported (Latest) Yes
PHP 8.4Supported Yes
PHP 8.3Security-Fixes Only Yes
PHP 8.2Security-Fixes Only Yes
PHP 8.1Unsupported Yes
PHP 8.0Unsupported Yes
PHP 7.4Unsupported Yes
PHP 7.3Unsupported Yes
PHP 7.2Unsupported Yes
PHP 7.1Unsupported Yes
PHP 7.0Unsupported Yes
PHP 5.6Unsupported Yes
PHP 5.5Unsupported Yes
PHP 5.4Unsupported Yes
PHP 5.3Unsupported Yes