TypeError

(PHP 7, PHP 8)

简介

有三种情况会抛出 TypeError。第一种，传递给函数的参数类型与函数预期声明的参数类型不匹配；第二种，函数返回的值与声明的函数返回类型不匹配；第三种，调用 PHP 内置函数时，传递了非法的数字参数（仅限在严格模式下 / strict mode）。

类摘要

TypeError extends Error {

/* 继承的属性 */

protected string $message;

protected int $code;

protected string $file;

protected int $line;

/* 继承的方法 */

final public Error::getMessage(): string

final public Error::getPrevious(): Throwable

final public Error::getCode(): mixed

final public Error::getFile(): string

final public Error::getLine(): int

final public Error::getTrace(): array

final public Error::getTraceAsString(): string

public Error::__toString(): string

final private Error::__clone(): void

}

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User Contributed Notes 2 notes

down

celsowmbr at outlook dot com ¶

5 years ago


An example:

<?php

function test($x):int {
    return $x;
}

try {
    test('ss');
}catch(TypeError $e){
    echo "Error !";
}

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-1

andrian dot test dot job at gmail dot com ¶

4 years ago


declare(strict_types=1); //if without this line the result is different

$a = [1,2=>[3,4]];

try{

    count($a, COUNT_RECURSIVE, 'toto and blabla');

}catch(TypeError $e){

    echo $e->getMessage();

}

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