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TypeError

Introduction

(PHP 7, PHP 8)

A TypeError may be thrown when:

  • The value being set for a class property does not match the property's corresponding declared type.
  • The argument type being passed to a function does not match its corresponding declared parameter type.
  • A value being returned from a function does not match the declared function return type.

Class synopsis

class TypeError extends Error {
/* Inherited properties */
protected string $message = "";
private string $string = "";
protected int $code;
protected string $file = "";
protected int $line;
private array $trace = [];
private ?Throwable $previous = null;
/* Inherited methods */
public Error::__construct(string $message = "", int $code = 0, ?Throwable $previous = null)
final public Error::getMessage(): string
final public Error::getPrevious(): ?Throwable
final public Error::getCode(): int
final public Error::getFile(): string
final public Error::getLine(): int
final public Error::getTrace(): array
final public Error::getTraceAsString(): string
public Error::__toString(): string
private Error::__clone(): void
}

Changelog

Version Description
7.1.0 In strict mode, passing an incorrect number of arguments to a built-in PHP function no longer results in a generic TypeError. Instead, a more specific ArgumentCountError, which extends TypeError, is thrown.

© 1997–2025 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/class.typeerror.php