class_alias

Function • Params and return types changed in PHP 8.0

Creates an alias for a class.

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

class_alias Function synopsis

class_alias(
    string $class,
    string $alias,
    bool $autoload = true
  ): bool

Parameters

$class

Typestring

The original class.

$alias

Typestring

The alias name for the class.

$autoload

OptionalTypeboolDefault valuetrue

Whether to autoload if the original class is not found.

Return value

Typebool

Returns true on success, false on failure

Changes to the class_alias Function

PHP 8.0

  • Return type added: bool
  • Parameter name of parameter #1 changed: $user_class_name to $class
  • Parameter type added for parameter #1 ($class): string
  • Parameter name of parameter #2 changed: $alias_name to $alias
  • Parameter type added for parameter #2 ($alias): string
  • Parameter type added for parameter #3 ($autoload): bool
  • Parameter default value added for position #3 ($autoload): true
  class_alias(
-     $user_class_name,
+     string $class,
-     $alias_name,
+     string $alias,
-     $autoload
+     bool $autoload = true
-   )
+   ): bool

class_alias 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