PHP - Manual: PHP 7 错误处理

2024-11-23

PHP 7 错误处理

PHP 7 改变了大多数错误的报告方式。不同于传统（PHP 5）的错误报告机制，现在大多数错误被作为 Error 异常抛出。

这种 Error 异常可以像 Exception 异常一样被第一个匹配的 try / catch 块所捕获。如果没有匹配的 catch 块，则调用异常处理函数（事先通过 set_exception_handler() 注册）进行处理。如果尚未注册异常处理函数，则按照传统方式处理：被报告为一个致命错误（Fatal Error）。

Error 类并非继承自 Exception 类，所以不能用 catch (Exception $e) { ... } 来捕获 Error。你可以用 catch (Error $e) { ... }，或者通过注册异常处理函数（ set_exception_handler()）来捕获 Error。

Error 层次结构

Throwable
- Error
- Exception
  - ...

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User Contributed Notes 5 notes

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107

hungry dot rahly at gmail dot com ¶

6 years ago


You can catch both exceptions and errors by catching(Throwable)

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demis dot palma at tiscali dot it ¶

5 years ago


Throwable does not work on PHP 5.x.

To catch both exceptions and errors in PHP 5.x and 7, add a catch block for Exception AFTER catching Throwable first.
Once PHP 5.x support is no longer needed, the block catching Exception can be removed.

try
{
   // Code that may throw an Exception or Error.
}
catch (Throwable $t)
{
   // Executed only in PHP 7, will not match in PHP 5
}
catch (Exception $e)
{
   // Executed only in PHP 5, will not be reached in PHP 7
}

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ryan dot jentzsch@{gmail} dot com ¶

4 years ago


An excellent blog post on the difference between exceptions, throwables and how PHP 7 handles these can be found here: https://trowski.com/2015/06/24/throwable-exceptions-and-errors-in-php7/

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lubaev dot ka at gmail dot com ¶

5 years ago


php 7.1

try {
   // Code that may throw an Exception or ArithmeticError.
} catch (ArithmeticError | Exception $e) {
   // pass
}

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diogoca at gmail dot com ¶

2 years ago


<?php

set_error_handler(function(int $number, string $message) {
   echo "Handler captured error $number: '$message'" . PHP_EOL  ;
});

try {
    echo $x; # notice, handled on callable
    pg_exec(null, null); # warning, handled on callable
    fho(); # fatal error, stop running and catched
} catch (Throwable $e) {
    echo "Captured Throwable: " . $e->getMessage() . PHP_EOL;
}

?>

set_error_handler will also works without try and catch

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官方地址：https://www.php.net/manual/en/language.errors.php7.php

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PHP官方手册 - 互联网笔记

PHP 7 错误处理

Error 层次结构

User Contributed Notes 5 notes