chmod

Function • Params and return types changed in PHP 8.0

Changes file mode.

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

chmod Function synopsis

chmod(string $filename, int $permissions): bool

Parameters

$filename

Typestring

Path to the file.

$permissions

Typeint

Note that $permissions is not automatically assumed to be an octal value, so to ensure the expected operation, you need to prefix $permissions with a zero (0). Strings such as "g+w" will not work properly.

Return value

Typebool

Returns true on success, false on failure

Changes to the chmod Function

PHP 8.0

  • Return type added: bool
  • Parameter type added for parameter #1 ($filename): string
  • Parameter name of parameter #2 changed: $mode to $permissions
  • Parameter type added for parameter #2 ($permissions): int
- chmod($filename, $mode)
+ chmod(string $filename, int $permissions): bool

chmod 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