search
Homephp教程php手册set_exception_handler函数在ThinkPHP中的用法,thinkphpc函数

set_exception_handler函数在ThinkPHP中的用法,thinkphpc函数

本文实例讲述了set_exception_handler函数在ThinkPHP中的用法。分享给大家供大家参考。具体方法如下:

函数:

复制代码 代码如下:

string set_exception_handler ( callback $exception_handler )


定义和用法:
set_exception_handler() 函数设置用户自定义的异常处理函数。
该函数用于创建运行时期间的用户自己的异常处理方法。
该函数会返回旧的异常处理程序,若失败,则返回 null。

语法:
set_exception_handler(exception_function)

参数 描述
error_function

必需。规定未捕获的异常发生时调用的函数。

该函数必须在调用 set_exception_handler() 函数之前定义。

这个异常处理函数需要需要一个参数,即抛出的 exception 对象。

提示和注释:

提示:在这个异常处理程序被调用后,脚本会停止执行。

同样是在看TP代码的时候发现的这个函数,就想不明白了,自己以前咋就没关心过这些东西呢?(捶胸顿足ing。。。)
继续来看一下TP是怎么实现的,呃,为啥一定要用TP呢,嗯。那好吧,一会儿我把手册的例子也搬过来。

复制代码 代码如下:

public function appException($e)
{
        halt($e->__toString());
}
set_exception_handler(array(&$this,"appException"));


呵呵,这个简单吧?因为我没有给出halt这个方法的实现,这样就足够了。
再看手册中的例子,

复制代码 代码如下:

function exception_handler($exception) {
  echo "Uncaught exception: " , $exception->getMessage(), "n";
}
set_exception_handler('exception_handler');
throw new Exception('Uncaught Exception');
echo "Not Executedn";


其实呢,set_exception_handler就是设置了一下,当你的程序需要抛出一个异常的时候调用哪个自定义的函数。
就这么简单

注意事项:
set_exception_handler(“myException”) 不仅可以接受函数,还可以接受 类的方法(公开的静态方法 及 公开的非静态方法 都可以),但需要以 数组形式 传递,数组的第一值为“类名”,第二个参数为“方法名”

希望本文所述对大家的ThinkPHP框架程序设计有所帮助。

thinkphp模版怎使用PHP函数

就是这么写的。对的。{$create_time|date='Y-m-d H:i:s',###} ,不过$create_time应该是11位的数字
参考资料:doc.thinkphp.cn/manual/use_function.html
 

ThinkPHP框架模板使用系统函数

// 可以使用两种方法// 1、直接使用标签// 2、使用模板标签 {$vo.name} {$vo.name|mb_strlen=0,20}
 

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

VSCode Windows 64-bit Download

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.