putenv

Function • Params and return types changed in PHP 8.0

Sets the value of an environment variable.

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

putenv Function synopsis

putenv(string $assignment): bool

Parameters

$assignment

Typestring

The setting, like "FOO=BAR"

Return value

Typebool

Returns true on success, false on failure

Changes to the putenv Function

PHP 8.0

  • Return type added: bool
  • Parameter name of parameter #1 changed: $setting to $assignment
  • Parameter type added for parameter #1 ($assignment): string
- putenv($setting)
+ putenv(string $assignment): bool

putenv 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