Embryo Validation

PHP validation for PSR-7 request.

Features

• PSR compatible.
• Used for $request->getParsedBody and $request->getUploadedFiles.
• Sanitize values.

Requirements

• PHP >= 7.1
• A PSR-7 http message implementation and PSR-17 http factory implementation (ex. Embryo-Http)

Installation

Using Composer:

$ composer require davidecesarano/embryo-validation

Example

You may quickly test this using the built-in PHP server going to http://localhost:8000.

$ cd example
$ php -S localhost:8000

Usage

Writing simple validation logic

Let's assume we have POST request. With PSR we have the $_POST parameters in $request->getParsedBody() and the $_FILES files in $request->getUploadedFiles(). Use Embryo Validation for to validate parameters values.

$request = (new Embryo\Http\Factory\ServerRequestFactory)->createServerRequestFromServer();
$validation = new Embryo\Validation\Validation($request);

$validation->name('title')->type('text')->required();
$validation->name('body')->type('any')->required();
if ($validation->isSuccess()) {
    // ...
} else {
    print_r($validation->getErrors());
}

If the validation rules pass, your code will keep executing normally; however, if validation fails, you can display errors.

Methods

name(string $name)

Set field name. If name not exists in $request->getParsedBody() or in $request->getUploadedFiles() return null.

type(string $type)

Set field type. If value not match at type return an error. The types are:

• text. Value may be anything, it will be sanitized with FILTER_SANITIZE_STRING.
• email. Value must be an email.
• file. Value must be an array of UploadedFileInterface objects or an UploadedFileInterface object.
• array. Value must be an array.
• datetime. Value must be a DateTime format.
• number. Value must be a generic number.
• int. Value must be an integer.
• float. Value must be a float.
• url. Value must be a url.
• slug. Value must be a slug.
• boolean. Value must be a boolean.
• any. Value may be anything, without sanitization (this is useful for html code).

required()

Set field require. The value must not be empty.

pattern(string $type)

Set field pattern. The value must match regular expression.

equal($value)

Set field value. The value must be the same.

match(... $value)

Set field matches. The value must match at one of the values.

length(int $min, int $max)

Set field length. The value may not be less than $min and greater than $max.

maxSize(int $size)

Set field file max size. The size of the file must not be greater than $size in bytes.

accept(... $ext)

Set allowed extensions for file field. The extension must match at one of the values.

result(): array

Return validation result. This method return an array like so:

    return [
        'status' => 200,
        'data' => [
            'title' => 'Hello World!',
            'body' => 'This is a post...',
            'name' => ''
        ],
        'errors' => [
            'name' => [
                'The name field is required.'
            ]
        ],
        'errorList' => [
            'The name field is required.'
        ]
    ];

If validation fails, status is 400, otherwise is 200.

isSuccess(): bool

Return true if validation pass, otherwise return false.

getErrors(): array

Return errors multidimensional array where key is field name and value is an errors array.

getErrorList(): array

Return errors array.

getData([string $key])

Return sanitized data array. If the value is an instance of UploadedFileInterface, you must use, for example, $file->getClientFilename() for returning file name. You may returning single item:

    echo $validation->getData('title'); // Hello World!