Refund Policy

<?php declare(strict_types=1); namespace PhpParser; use PhpParser\Node\Expr; use PhpParser\Node\Scalar; use function array_merge; /** * Evaluates constant expressions. * * This evaluator is able to evaluate all constant expressions (as defined by PHP), which can be * evaluated without further context. If a subexpression is not of this type, a user-provided * fallback evaluator is invoked. To support all constant expressions that are also supported by * PHP (and not already handled by this class), the fallback evaluator must be able to handle the * following node types: * * * All Scalar\MagicConst\* nodes. * * Expr\ConstFetch nodes. Only null/false/true are already handled by this class. * * Expr\ClassConstFetch nodes. * * The fallback evaluator should throw ConstExprEvaluationException for nodes it cannot evaluate. * * The evaluation is dependent on runtime configuration in two respects: Firstly, floating * point to string conversions are affected by the precision ini setting. Secondly, they are also * affected by the LC_NUMERIC locale. */ class ConstExprEvaluator { /** @var callable|null */ private $fallbackEvaluator; /** * Create a constant expression evaluator. * * The provided fallback evaluator is invoked whenever a subexpression cannot be evaluated. See * class doc comment for more information. * * @param callable|null $fallbackEvaluator To call if subexpression cannot be evaluated */ public function __construct(?callable $fallbackEvaluator = null) { $this->fallbackEvaluator = $fallbackEvaluator ?? function (Expr $expr) { throw new ConstExprEvaluationException( "Expression of type {$expr->getType()} cannot be evaluated" ); }; } /** * Silently evaluates a constant expression into a PHP value. * * Thrown Errors, warnings or notices will be converted into a ConstExprEvaluationException. * The original source of the exception is available through getPrevious(). * * If some part of the expression cannot be evaluated, the fallback evaluator passed to the * constructor will be invoked. By default, if no fallback is provided, an exception of type * ConstExprEvaluationException is thrown. * * See class doc comment for caveats and limitations. * * @param Expr $expr Constant expression to evaluate * @return mixed Result of evaluation * * @throws ConstExprEvaluationException if the expression cannot be evaluated or an error occurred */ public function evaluateSilently(Expr $expr) { set_error_handler(function ($num, $str, $file, $line) { throw new \ErrorException($str, 0, $num, $file, $line); }); try { return $this->evaluate($expr); } catch (\Throwable $e) { if (!$e instanceof ConstExprEvaluationException) { $e = new ConstExprEvaluationException( "An error occurred during constant expression evaluation", 0, $e); } throw $e; } finally { restore_error_handler(); } } /** * Directly evaluates a constant expression into a PHP value. * * May generate Error exceptions, warnings or notices. Use evaluateSilently() to convert these * into a ConstExprEvaluationException. * * If some part of the expression cannot be evaluated, the fallback evaluator passed to the * constructor will be invoked. By default, if no fallback is provided, an exception of type * ConstExprEvaluationException is thrown. * * See class doc comment for caveats and limitations. * * @param Expr $expr Constant expression to evaluate * @return mixed Result of evaluation * * @throws ConstExprEvaluationException if the expression cannot be evaluated */ public function evaluateDirectly(Expr $expr) { return $this->evaluate($expr); } /** @return mixed */ private function evaluate(Expr $expr) { if ($expr instanceof Scalar\Int_ || $expr instanceof Scalar\Float_ || $expr instanceof Scalar\String_ ) { return $expr->value; } if ($expr instanceof Expr\Array_) { return $this->evaluateArray($expr); } // Unary operators if ($expr instanceof Expr\UnaryPlus) { return +$this->evaluate($expr->expr); } if ($expr instanceof Expr\UnaryMinus) { return -$this->evaluate($expr->expr); } if ($expr instanceof Expr\BooleanNot) { return !$this->evaluate($expr->expr); } if ($expr instanceof Expr\BitwiseNot) { return ~$this->evaluate($expr->expr); } if ($expr instanceof Expr\BinaryOp) { return $this->evaluateBinaryOp($expr); } if ($expr instanceof Expr\Ternary) { return $this->evaluateTernary($expr); } if ($expr instanceof Expr\ArrayDimFetch && null !== $expr->dim) { return $this->evaluate($expr->var)[$this->evaluate($expr->dim)]; } if ($expr instanceof Expr\ConstFetch) { return $this->evaluateConstFetch($expr); } return ($this->fallbackEvaluator)($expr); } private function evaluateArray(Expr\Array_ $expr): array { $array = []; foreach ($expr->items as $item) { if (null !== $item->key) { $array[$this->evaluate($item->key)] = $this->evaluate($item->value); } elseif ($item->unpack) { $array = array_merge($array, $this->evaluate($item->value)); } else { $array[] = $this->evaluate($item->value); } } return $array; } /** @return mixed */ private function evaluateTernary(Expr\Ternary $expr) { if (null === $expr->if) { return $this->evaluate($expr->cond) ?: $this->evaluate($expr->else); } return $this->evaluate($expr->cond) ? $this->evaluate($expr->if) : $this->evaluate($expr->else); } /** @return mixed */ private function evaluateBinaryOp(Expr\BinaryOp $expr) { if ($expr instanceof Expr\BinaryOp\Coalesce && $expr->left instanceof Expr\ArrayDimFetch ) { // This needs to be special cased to respect BP_VAR_IS fetch semantics return $this->evaluate($expr->left->var)[$this->evaluate($expr->left->dim)] ?? $this->evaluate($expr->right); } // The evaluate() calls are repeated in each branch, because some of the operators are // short-circuiting and evaluating the RHS in advance may be illegal in that case $l = $expr->left; $r = $expr->right; switch ($expr->getOperatorSigil()) { case '&': return $this->evaluate($l) & $this->evaluate($r); case '|': return $this->evaluate($l) | $this->evaluate($r); case '^': return $this->evaluate($l) ^ $this->evaluate($r); case '&&': return $this->evaluate($l) && $this->evaluate($r); case '||': return $this->evaluate($l) || $this->evaluate($r); case '??': return $this->evaluate($l) ?? $this->evaluate($r); case '.': return $this->evaluate($l) . $this->evaluate($r); case '/': return $this->evaluate($l) / $this->evaluate($r); case '==': return $this->evaluate($l) == $this->evaluate($r); case '>': return $this->evaluate($l) > $this->evaluate($r); case '>=': return $this->evaluate($l) >= $this->evaluate($r); case '===': return $this->evaluate($l) === $this->evaluate($r); case 'and': return $this->evaluate($l) and $this->evaluate($r); case 'or': return $this->evaluate($l) or $this->evaluate($r); case 'xor': return $this->evaluate($l) xor $this->evaluate($r); case '-': return $this->evaluate($l) - $this->evaluate($r); case '%': return $this->evaluate($l) % $this->evaluate($r); case '*': return $this->evaluate($l) * $this->evaluate($r); case '!=': return $this->evaluate($l) != $this->evaluate($r); case '!==': return $this->evaluate($l) !== $this->evaluate($r); case '+': return $this->evaluate($l) + $this->evaluate($r); case '**': return $this->evaluate($l) ** $this->evaluate($r); case '<<': return $this->evaluate($l) << $this->evaluate($r); case '>>': return $this->evaluate($l) >> $this->evaluate($r); case '<': return $this->evaluate($l) < $this->evaluate($r); case '<=': return $this->evaluate($l) <= $this->evaluate($r); case '<=>': return $this->evaluate($l) <=> $this->evaluate($r); } throw new \Exception('Should not happen'); } /** @return mixed */ private function evaluateConstFetch(Expr\ConstFetch $expr) { $name = $expr->name->toLowerString(); switch ($name) { case 'null': return null; case 'false': return false; case 'true': return true; } return ($this->fallbackEvaluator)($expr); } }

At NFC Pay, we strive to provide a seamless and satisfactory experience with our services. This Refund Policy outlines the circumstances under which refunds may be issued for transactions made through our platform. Please read this policy carefully to understand your rights regarding refunds.
1. Eligibility for Refunds
Refunds may be considered under the following circumstances:

Unauthorized Transactions: If you believe that an unauthorized transaction has occurred on your account, you must report it to us within [30 days] of the transaction date. We will investigate the claim, and if confirmed as unauthorized, a refund will be issued.
Technical Errors: If a transaction fails due to a technical error on our platform, resulting in an incorrect charge, you may be eligible for a refund. Please report the issue to our customer support team as soon as possible.
Service Errors: If a payment was made in error due to a system malfunction or incorrect processing by NFC Pay, you may request a refund. Proof of the error may be required to process your request.

2. Non-Refundable Situations
Refunds will generally not be issued in the following situations:

Completed Transactions: Refunds cannot be processed for completed transactions where the goods or services have already been received as intended.
Merchant Issues: NFC Pay is a payment facilitator and is not responsible for disputes related to the quality or delivery of goods and services provided by merchants. Refunds in these cases must be resolved directly with the merchant.
User Errors: Transactions resulting from user errors, such as incorrect recipient details or duplicate payments, are generally not eligible for refunds. Please double-check your details before confirming any transaction.

3. Refund Process
To request a refund, please follow these steps:

Contact Customer Support: Reach out to our customer support team via [email/phone/app support chat] with your transaction details, including the date, amount, and reason for the refund request.
Investigation: Our team will review your request and may ask for additional information or documentation to support your claim. This process typically takes [5-10 business days], depending on the complexity of the issue.
Refund Decision: After reviewing your request, we will notify you of our decision. If approved, the refund will be processed back to your original payment method. The timing of the refund will depend on your bank or payment provider and may take up to [10 business days] to reflect in your account.

4. Refund Exceptions
Certain transactions may be subject to specific terms and conditions, including non-refundable fees or charges. Please review the terms associated with each transaction carefully, as some fees may not be eligible for refunds.
5. Modifications to the Refund Policy
NFC Pay reserves the right to modify this Refund Policy at any time. Changes will be communicated through updates on our website and app, and the effective date will be updated accordingly. We encourage you to review this policy periodically to stay informed about our refund practices.
By using NFC Pay, you agree to this Refund Policy and understand the terms under which refunds may be issued. Our goal is to ensure a fair and transparent refund process, providing you with confidence and peace of mind when using our services.

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