php如何捕获错误
php怎么捕获异常?
php怎么捕获异常?
有没有类似.net try catch机制?
php不能逐行调试 蛋疼!
------解决方案--------------------
有的 写法一样
try {
} catch (Exception $e) {
print $e->getMessage();
}
------解决方案--------------------
楼主没找对ide
------解决方案--------------------
其实php的调试可以随时调,想在哪里调,最简单就是在哪里输出。当然zend-studio也提供了断点功能调试,但是远不如这样方便。
其实都各有各的好处,哥,还是从了吧。
------解决方案--------------------
#1 可爱北极熊 正解
------解决方案--------------------
还需要在try{}语句块里抛出异常 throw new Exception('It is an exception!') ,然后由catch(Exception $e) 捕获。
------解决方案--------------------
用echo来放点找异常,php没法啊
------解决方案--------------------
那就去看php的error_log啊...会有各种详细的报错信息....还有啥可catch的...
------解决方案--------------------
错误大体有两种,一种是php可以捕获到的,例如语法错误。还有一种,是逻辑上的错误,这种错误机器并不能捕获,所以才会用到try catch人为捕获。
我想你说的错误只是前一种,那么打开错误提示display_errors = On,就可以看到。
------解决方案--------------------
置顶帖子里的基础问答里有 怎么打开错误提示的.
------解决方案--------------------
还有set_exception_handle。
------解决方案--------------------
你这段代码没异常,当然不会执行那句
------解决方案--------------------
咳咳,这个不是错,在php里, 自动转换
------解决方案--------------------
在任何语言中,强制类型转换都不会是错误!
虽然有时你并没有得到期望的结果
------解决方案--------------------
php的错误异常和java的类似,不过一般都要自己去抛出:例子:
try{
$m = 0;
if($m throw new Exception('m='.$m.':小于零');
}
echo $m;
} catch(exception $e){
echo "错误[line->".($e->getLine())."]: ".($e->getMessage());
}
------解决方案--------------------
php弱类型 改变数据类型没有问题
------解决方案--------------------
让除数为0 ,就会看到抛异常了

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

To work on file upload we are going to use the form helper. Here, is an example for file upload.

In this chapter, we are going to learn the following topics related to routing ?

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

Validator can be created by adding the following two lines in the controller.
