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<?php |
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/** |
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* Check |
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* |
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* Validate a data map against defined methods. |
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* |
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* @package core |
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* @author [email protected] |
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* @copyright Caffeina srl - 2015 - http://caffeina.com |
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*/ |
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class Check { |
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use Module, Events; |
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protected static $methods = [], |
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$errors = []; |
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public static $data = []; |
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public static function valid($rules, $data){ |
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static::$errors = []; |
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static::triggerOnce('init'); |
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self::$data = ($data = (array)$data); |
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foreach ((array)$rules as $field_name => $rule) { |
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$current = isset($data[$field_name]) ? $data[$field_name] : null; |
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if (is_callable($rule)){ |
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static::$errors[$field_name] = call_user_func($rule,$current); |
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continue; |
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} elseif (is_string($rule)) { |
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$current_rules = array_flip(preg_split('/\s*\|\s*/', $rule)); |
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} else { |
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$current_rules = (array)$rule; |
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} |
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static::$errors[$field_name] = true; |
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foreach($current_rules as $method => $message) { |
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$meth_name = strtok($method, ':'); |
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$opts = strtok(':') ?: ''; |
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$opts = $opts ? json_decode("[$opts]") : []; |
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$meth_opts = $opts ? array_merge([$current], $opts) : [$current]; |
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if ( static::$errors[$field_name] !== true ) continue 2; |
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if (empty(static::$methods[$meth_name])) { |
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static::$errors[$field_name] = true; |
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} else { |
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if (call_user_func_array(static::$methods[$meth_name]->validate,$meth_opts)){ |
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static::$errors[$field_name] = true; |
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} else { |
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$arg = []; |
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foreach ($meth_opts as $key => $value) { |
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$arg["arg_$key"] = $value; |
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} |
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static::$errors[$field_name] = Text::render(static::$methods[$meth_name]->message,$arg); |
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} |
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} |
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} |
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} |
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self::$data = []; |
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// Clean non-errors |
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static::$errors = array_filter(static::$errors,function($v){ |
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return $v !== true; |
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}); |
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return empty(static::$errors); |
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} |
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public static function method($name, $definition = null){ |
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if (is_array($name)) { |
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foreach ($name as $method_name => $method_definition){ |
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if (is_callable($method_definition)) $method_definition = ['validate' => $method_definition]; |
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if (empty($method_definition['validate']) || !is_callable($method_definition['validate'])) continue; |
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$method_definition['message'] = Filter::with("core.check.error.$method_name",@$method_definition['message']?:'Field not valid.'); |
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static::$methods[$method_name] = (object)$method_definition; |
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} |
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} else { |
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if (is_callable($definition)) $definition = ['validate' => $definition]; |
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if (empty($definition['validate']) || !is_callable($definition['validate'])) return; |
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$methods['message'] = Filter::with("core.check.error.$name",@$methods['message']?:'Field not valid.'); |
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static::$methods[$name] = (object)$definition; |
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} |
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} |
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public static function errors() { |
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return static::$errors; |
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} |
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} |
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Check::on('init',function(){ |
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Check::method([ |
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'required' => [ |
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'validate' => function($value) { |
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return (is_numeric($value) && $value==0) || !empty($value); |
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}, |
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'message' => "This value cannot be empty.", |
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], |
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'alphanumeric' => [ |
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'validate' => function($value) { |
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return (bool)preg_match('/^[0-9a-zA-Z]+$/',$value); |
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}, |
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'message' => "Value must be alphanumeric.", |
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], |
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'numeric' => [ |
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'validate' => function($value) { |
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return (bool)preg_match('/^\d+$/',$value); |
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}, |
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'message' => "Value must be numeric.", |
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], |
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'email' => [ |
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'validate' => function($value) { |
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return (bool)filter_var($value, FILTER_VALIDATE_EMAIL); |
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}, |
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'message' => "This is not a valid email.", |
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], |
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'url' => [ |
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'validate' => function($value) { |
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return (bool)filter_var($value, FILTER_VALIDATE_URL); |
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}, |
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'message' => "This is not a valid URL.", |
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], |
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'max' => [ |
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'validate' => function($value,$max) { |
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return $value<=$max ? true : false; |
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}, |
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'message' => "Value must be less than {{arg_1}}.", |
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], |
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'min' => [ |
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'validate' => function($value,$min) { |
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return $value >= $min; |
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}, |
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'message' => "Value must be greater than {{arg_1}}.", |
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], |
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'range' => [ |
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'validate' => function($value,$min,$max) { |
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return ( $value >= $min ) && ( $value <= $max ); |
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}, |
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'message' => "This value must be in [{{arg_1}},{{arg_2}}] range.", |
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], |
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'words' => [ |
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'validate' => function($value,$max) { |
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return str_word_count($value) <= $max; |
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}, |
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'message' => "Too many words, max count is {{arg_1}}.", |
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], |
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'length' => [ |
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'validate' => function($value,$length) { |
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return strlen($value) == $length; |
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}, |
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'message' => "This value must be {{arg_1}} characters.", |
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], |
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'min_length' => [ |
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'validate' => function($value,$min) { |
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return strlen($value) >= $min; |
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}, |
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'message' => "Too few characters, min count is {{arg_1}}.", |
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], |
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'max_length' => [ |
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'validate' => function($value,$max) { |
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return strlen($value) <= $max; |
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}, |
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'message' => "Too many characters, max count is {{arg_1}}.", |
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], |
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'true' => [ |
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'validate' => function($value) { |
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return (bool)$value; |
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}, |
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'message' => "This value must be true.", |
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], |
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'false' => [ |
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'validate' => function($value) { |
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return !$value; |
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}, |
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'message' => "This value must be false.", |
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], |
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'same_as' => [ |
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'validate' => function($value,$fieldname) { |
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$x = isset(Check::$data[$fieldname]) ? Check::$data[$fieldname] : ''; |
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return $value == $x; |
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}, |
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'message' => "Field must be equal to {{arg_1}}.", |
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], |
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'in_array' => [ |
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'validate' => function($value,$array_values) { |
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return in_array($value, $array_values); |
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}, |
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'message' => "This value is forbidden.", |
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], |
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]); |
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}); |
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Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArray
is initialized the first time when the foreach loop is entered. You can also see that the value of thebar
key is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.