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PHPValidator

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v2.1.0 stable

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About PHPValidator

PHPValidator is a modern PHP library for data validation in your PHP applications. It provides a flexible and extensible way to validate data using predefined rules or by creating custom validation rules.

Installation

Use Composer to install PHPValidator:

composer require blakvghost/php-validator

Usage

use BlakvGhostPHPValidatorValidator;
use BlakvGhostPHPValidatorValidatorException;

try {

    $data = [
        'username' => 'BlakvGhost',
        'email' => '[email protected]',
        'score' => 42,
    ];
    // or
    // $data = $_POST;

    $validator = new Validator($data, [
        'username' => 'required|string',
        'email' => 'required|email',
        'score' => ['required','max:200', new CustomRule()],
        'password' => new CustomRule(),
    ]);

    if ($validator->isValid()) {
        echo "Validation passed!";
    } else {
        $errors = $validator->getErrors();
        print_r($errors);
    }
} catch (ValidatorException $e) {
    echo "Validation error: " . $e->getMessage();
}

You can also customize the validation error messages or specify the default language

$data = [
    'username' => 'BlakvGhost',
];

$validator = new Validator(
    $data,
    [
        'username' => 'required|string',
    ],
    [
        'username' => [
            'required' => 'Votre nom d'utilisateur doit être présent',
            'string' => 'Votre nom d'utilisateur doit forcément être une chaîne de caractère',
            ],
        ]
    );
    
    // For the default language
    $validator = new Validator($data, $rules, lang: 'fr');

Features

Predefined Rules: PHPValidator comes with a set of predefined validation rules such as required, string, email, maxLength etc.
Custom Rules: Easily create custom validation rules by implementing the Rule Interface.
Multilingual Support: Customize validation error messages based on the application's language using the LangManager.

List of Predefined Rules

PHPValidator provides a variety of predefined rules that you can use for data validation. Here is a list of some commonly used rules along with examples of their usage:

Required Rule
- Ensures that a field is present in the data.
```
'username' => 'required'
```
String Rule
- Checks if a field is of string type.
```
'username' => 'string'
```
Email Rule
- Validates that a field is a well-formed email address.
```
'email' => 'email'
```
Max Length Rule
- Specifies the maximum length of a string field.
```
'username' => 'max:25'
```
Confirmed Rule
- Checks if a field's value is the same as another field (commonly used for password confirmation).
```
'password_confirmation' => 'confirmed:password'
```
File Rule
- Validates that a field is a file upload.
```
'file' => 'file'
```
Accepted Rule
- Validates that a field is "yes", "on", "1", or true. Useful for checkboxes.
```
'terms_and_conditions' => 'accepted'
```
Accepted If Rule
- Validates that a field is accepted if another field is equal to a specified value.
```
'terms_and_conditions' => 'accepted_if:is_adult,true'
```
ActiveURL Rule
- Validates that a field is a valid, active URL.
```
'website' => 'active_url'
```
Alpha Rule
- Validates that a field contains only alphabetic characters.
```
'name' => 'alpha'
```
Numeric Rule
- Validates that a field contains only numeric characters.
```
'age' => 'numeric'
```
Lowercase Rule
- Validates that a field contains only lowercase alphabetic characters.
```
'username' => 'lowercase'
```
Uppercase Rule
- Validates that a field contains only uppercase alphabetic characters.
```
'username' => 'uppercase'
```
In Rule
- Validates that a field's value is among a list of predefined values.
```
'role' => 'in:admin,editor,viewer'
```
Nullable Rule
- Allows a field to be null or empty.
```
'optional_field' => 'nullable'
```
Password Rule
- Validates that a field is a secure password.
```
'password' => 'password'
```
Same Rule
- Validates that a field's value is the same as the value of another field.
```
'password_confirmation' => 'same:password'
```
Max Length Rule
- Specifies the minimum length of a string field.
```
'username' => 'min:8'
```
Not In Rule
- Validates that a field's value is not in a specified set.
```
'value' => 'not_in:foo,bar'
```
Required With Rule
- Requires the field to be present if another specified field is present.
```
'firstname' => 'required_with:lastname',
```
Valid IP Rule
- Validates that a field's value is a valid IP address.
```
'client_ip' => 'ip',
```
Json Rule
- Validates that a field's value is a valid JSON string.
```
'config' => 'json',
```
URL Rule
- Validates that a field's value is a valid URL.
```
'website' => 'url',
```
Alpha Numeric Rule
- Validates that a field's value contains only alphanumeric characters.
```
'pseudo' => 'alpha_num',
```
Boolean Rule
- Validates that a field's value is a boolean.
```
'is_admin' => 'bool',
```

Size Rule

Validates that the size of a string, integer, array, or file is equal to a specified value.

    [
        'string' =>'size:7', // strlen(string) == 7
        'integer' =>'size:7', // integer == 7
        'array' =>'size:7', // count(array) == 7
        'file' =>'size:512', // file size (kb) == 512
    ]

Not Required With Rule
- Requires the field not be present if another specified field is present.
```
'email' => 'not_required_with:phone_number',
```

Custom Rule

In addition to the predefined rules, you can create custom validation rules by implementing the Rule Interface. Here's an example of how to create and use a custom rule:

CustomPasswordRule.php

// CustomPasswordRule.php
namespace YourNameSpaceRules;

use BlakvGhostPHPValidatorContractsRule;

class CustomPasswordRule implements Rule
{
    protected $field;

    public function __construct(protected array $parameters = [])
    {
    }

    public function passes(string $field, $value, array $data): bool
    {
        $this->field = $field;
        // Implement your custom validation logic here
        // Example: Check if the password is equal to confirm_password
        return $value === $data['confirm_password'];
    }

    public function message(): string
    {
        return "Vos deux mot de passes ne sont pas identiques";
    }
}

Usage in Validator

Use your custom class directly

use BlakvGhostPHPValidatorValidator;
use BlakvGhostPHPValidatorValidatorException;

use YourNameSpaceCustomPasswordRule;


// ...

try {

    $data = [
        'password' => '42',
        'confirm_password' => '142',
    ];
    // or
    // $data = $_POST;

    $validator = new Validator($data, [
        'password' => ['required', new CustomPasswordRule()],
    ]);

    if ($validator->isValid()) {
        echo "Validation passed!";
    } else {
        $errors = $validator->getErrors();
        print_r($errors);
    }
} catch (ValidatorException $e) {
    echo "Validation error: " . $e->getMessage();
}

Add your custom class to the rules list and use it as if it were native

use BlakvGhostPHPValidatorValidator;
use BlakvGhostPHPValidatorValidatorException;
use BlakvGhostPHPValidatorMappingRulesMaped;

use YourNameSpaceCustomPasswordRule;

// Add your rule here using an alias and the full namespace of your custom class
RulesMaped::addRule('c_password', CustomPasswordRule::class);

try {

    $data = [
        'password' => '42',
        'confirm_password' => '142',
    ];

    $validator = new Validator($data, [
        'password' => 'required|c_password',
    ]);

    if ($validator->isValid()) {
        echo "Validation passed!";
    } else {
        $errors = $validator->getErrors();
        print_r($errors);
    }
} catch (ValidatorException $e) {
    echo "Validation error: " . $e->getMessage();
}

In this example, we created a CustomPasswordRule that checks if the password is equal to confirm_password. You can customize the passes method to implement your specific validation logic.

Contributing

If you would like to contribute to PHPValidator, please follow our Contribution Guidelines.

Authors

Kabirou ALASSANE

Support

For support, you can reach out to me by email at [email protected]. Feel free to contact me if you have any questions or need assistance with PHPValidator.