is_file

FunctionParams and return types changed in PHP 8.0

Tells whether the filename is a regular file.

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

is_file Function synopsis

is_file(string $filename): bool

Parameters

$filename

Typestring

Path to the file.

Return value

Typebool

Returns true if the filename exists and is a regular file, false otherwise.

Changes to the is_file Function

PHP 8.0

  • Return type added: bool
  • Parameter type added for parameter #1 ($filename): string
- is_file($filename)
+ is_file(string $filename): bool

is_file Function Availability

PHP VersionAvailability
PHP 8.5Future Release Yes
PHP 8.4Upcoming Release Yes
PHP 8.3Supported (Latest) Yes
PHP 8.2Supported Yes
PHP 8.1Security-Fixes Only 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