Validate

The Validate class provides a simple, static method to validate data against a set of rules. It's used throughout the SchoolKit modules to ensure data integrity.

Quick Reference

validate()

validate(array $data, array $rules): array

Validates data against rules and throws exception on failure

Methods

validate

validate(array $data, array $rules): array

Validates an array of data against a set of rules. If validation fails, it throws an InvalidArgumentException with a JSON-encoded list of errors.

Parameters

Name	Type	Required	Description
`$data`	`array`	Yes	The associative array of data to validate (e.g., `$_POST`).
`$rules`	`array`	Yes	An associative array where keys match the data keys and values are validation rules.

Returns

The original $data array if validation is successful.

Example

<?php
require_once 'schoolkit.php';

$input = [
    'name' => 'John Doe',
    'email' => 'john.doe@example.com',
    'age' => '30',
    'status' => 'active'
];

$rules = [
    'name' => 'required|string|min:2',
    'email' => 'required|email',
    'age' => 'required|int|min:18',
    'status' => 'in:active,inactive'
];

try {
    $validatedData = Skhoolar_SchoolKit_Core_Validate::validate($input, $rules);
    echo "All data is valid!";
    print_r($validatedData);
} catch (InvalidArgumentException $e) {
    echo "Validation failed: " . $e->getMessage();
}
?>

Available Rules

Rules can be provided as a pipe-separated string or as an array of strings.

Rule	Description	Example
`required`	The field must not be null, an empty string, or an empty array.	`'name' => 'required'`
`string`	The field must be a string.	`'name' => 'string'`
`int`	The field must be a valid integer.	`'age' => 'int'`
`numeric`	The field must be numeric.	`'score' => 'numeric'`
`email`	The field must be a valid email address.	`'user_email' => 'email'`
`bool`	The field must be a boolean value (true, false, 1, 0, '1', '0').	`'is_active' => 'bool'`
`date`	The field must be a valid date in YYYY-MM-DD format.	`'start_date' => 'date'`
`datetime`	The field must be a valid datetime in YYYY-MM-DD HH:MM:SS format.	`'event_time' => 'datetime'`
`min:X`	The field's length (string), value (numeric), or count (array) must be at least X.	`'password' => 'min:8'`
`max:X`	The field's length (string), value (numeric), or count (array) must not exceed X.	`'bio' => 'max:500'`
`in:a,b,c`	The field's value must be one of the specified values.	`'status' => 'in:pending,approved,rejected'`