International PHP Conference Berlin 2025

    ArgumentCountError

    (PHP 7 >= PHP 7.1.0, PHP 8)

    简介

    ArgumentCountError 当传递给用户定义的函数或方法的参数太少时被抛出。

    当传递到非可变内置函数的参数太多时，也会抛出此错误。

    类摘要

    class ArgumentCountError extends TypeError {
    /* 继承的属性 */
    protected string $message = "";
    private string $string = "";
    protected int $code;
    protected string $file = "";
    protected int $line;
    private array $trace = [];
    private ?Throwable $previous = null;
    /* 继承的方法 */
    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
    }

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    用户贡献的备注 1 note

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    18
    T7To7
    6 years ago
    Note if an invalid number of arguments are passed to a built-in function an ArgumentCountError exception will be thrown if and only if your code is in strict mode.

    <?php
    declare(strict_types = 1);

    try {
    echo     strlen('ahmed', 4);
    } catch (    ArgumentCountError $e) {
    echo     $e->getMessage()';
    }
    ?>
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