File Validators


Laminas\Validator\File\Crc32 allows you to validate if a given file's hashed contents matches the supplied crc32 hash(es). It is subclassed from the Hash validator to provide a validator that only supports the crc32 algorithm.

Requires the hash extension

This validator requires the PHP Hash extension with the crc32 algorithm.

Supported Options

The following options are supported:

  • hash: Single string hash to test the file against, or array of filename/hash pairs.

Usage Examples

// Does file have the given hash?
$validator = new \Laminas\Validator\File\Crc32('3b3652f');

// Or, check file against multiple hashes
$validator = new \Laminas\Validator\File\Crc32(['3b3652f', 'e612b69']);

// Perform validation with file path
if ($validator->isValid('./myfile.txt')) {
    // file is valid

Public Methods


getCrc32() : array

Returns an array of all currently registered hashes to test against.


addCrc32(string|array $options) : void

Add a single hash to test against, or a set of filename/hash pairs to test against.


setCrc32(string|array $options): void

Overwrite the current list of registered hashes with the one(s) provided.