printf

Function • Params and return types changed in PHP 8.0

Output a formatted string.

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

printf Function synopsis

printf(string $format, mixed ...$values): int

Parameters

$format

Typestring

$values

Variadic, OptionalTypemixed

Return value

Typeint

Returns the length of the outputted string.

Changes to the printf Function

PHP 8.0

  • Return type added: int
  • Parameter type added for parameter #1 ($format): string
  • Parameter name of parameter #2 changed: $args to $values
  • Parameter type added for parameter #2 ($values): mixed
- printf($format, ...$args)
+ printf(string $format, mixed ...$values): int

printf 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