filter_has_var

Function • Params and return types changed in PHP 8.0

Checks if a variable of the specified type exists.

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

filter_has_var Function synopsis

filter_has_var(int $input_type, string $var_name): bool

Parameters

$input_type

Typeint

One of INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER, or INPUT_ENV.

$var_name

Typestring

Name of a variable to check.

Return value

Typebool

Returns true on success, false on failure

Changes to the filter_has_var Function

PHP 8.0

  • Return type added: bool
  • Parameter name of parameter #1 changed: $type to $input_type
  • Parameter type added for parameter #1 ($input_type): int
  • Parameter name of parameter #2 changed: $variable_name to $var_name
  • Parameter type added for parameter #2 ($var_name): string
- filter_has_var($type, $variable_name)
+ filter_has_var(int $input_type, string $var_name): bool

filter_has_var 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