Size

February 3, 2026 · View on GitHub

Size("B"|"KB"|"MB"|"GB"|"TB"|"PB"|"EB"|"ZB"|"YB" $unit, Validator $validator)

Validates whether the input is a file that is of a certain size or not.

v::size('KB', v::greaterThan(1))->assert('/path/to/file');
// Validation passes successfully

v::size('MB', v::between(1, 2))->assert('/path/to/file');
// → The size in megabytes of "/path/to/file" must be between 1 and 2

v::size('GB', v::lessThan(1))->assert('/path/to/file');
// Validation passes successfully

Accepted data storage units are B, KB, MB, GB, TB, PB, EB, ZB, and YB.

This validator will accept:

string file paths
SplFileInfo objects (see SplFileInfo)
Psr\Http\Message\UploadedFileInterface objects (see PSR-7)
Psr\Http\Message\StreamInterface objects (see PSR-7)

Templates

`Size::TEMPLATE_STANDARD`

Mode	Template
`default`	The size in {{unit\|trans}} of
`inverted`	The size in {{unit\|trans}} of

`Size::TEMPLATE_WRONG_TYPE`

Used when the input is not a valid file path, a SplFileInfo object, or a PSR-7 interface.

Mode	Template
`default`	{{subject}} must be a filename, an instance of SplFileInfo or a PSR-7 interface
`inverted`	{{subject}} must not be a filename, an instance of SplFileInfo or a PSR-7 interface

Template as prefix

The template serves as a prefix to the template of the inner validator.

v::size('MB', v::equals(2))->assert('/path/to/file');
// → The size in megabytes of "/path/to/file" must be equal to 2

v::size('KB', v::not(v::equals(56)))->assert('/path/to/file');
// Validation passes successfully

Template placeholders

Placeholder	Description
`subject`	The validated input or the custom validator name (if specified).
`unit`	The name of the storage unit (bytes, kilobytes, etc.)

Categorization

File system
Transformations

Changelog

Version	Description
3.0.0	Templates changed
3.0.0	Became a transformation
2.1.0	Add PSR-7 support
1.0.0	Created