Home php教程 php手册 PHP之如何将数组变量写入文件?

PHP之如何将数组变量写入文件?

Jun 13, 2016 am 10:54 AM
ajax debug php write Error variable how Will array document log Record ask

在用PHP记录日志,或者是 Ajax 请求出错想要 debug 的时候。我们一般都会将信息写入到一个指定的文件

当中。然后根据相应的信息来处理问题。

比如笔者最喜欢在用 Ajax 取不到数据的时候,在PHP脚本里面加上下面一段代码

$fp = fopen('./a.txt', 'a+b'); 

 

fwrite($fp, $content); 

 

fclose($fp); 

 

但是,这里有一个问题。那就是 $content 是一个数组怎么办?

你可能会说,我循环输出。那要是多维数组呢?

我只是为了 debug 用得着搞得那么累吗。

这里你可以使用 var_export() .

此函数返回关于传递给该函数的变量的结构信息,它和 var_dump() 类似,不同的是

其返回的表示是合法的 PHP 代码。

可以通过将函数的第二个参数设置为 TRUE,从而返回变量的表示。

$fp = fopen('./a.txt', 'a+b');

 

fwrite($fp, var_export($content, true));

 

fclose($fp);

 

注意 var_export() 的第二个参数需要设置为 true 才表示取得返回值。要不然是直接输出

另外,如果你的 $content 只是一个数组,而不包含其他的内容的话

你也可以用 print_r()

同样的,print_r() 的第二个参数也要设置为 true

 

$fp = fopen('./a.txt', 'a+b');

 

fwrite($fp, print_r($content, true));

 

fclose($fp);

Statement of this Website
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

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

CakePHP Project Configuration CakePHP Project Configuration Sep 10, 2024 pm 05:25 PM

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

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

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

CakePHP Date and Time CakePHP Date and Time Sep 10, 2024 pm 05:27 PM

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

CakePHP File upload CakePHP File upload Sep 10, 2024 pm 05:27 PM

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

CakePHP Routing CakePHP Routing Sep 10, 2024 pm 05:25 PM

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

Discuss CakePHP Discuss CakePHP Sep 10, 2024 pm 05:28 PM

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

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

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

CakePHP Creating Validators CakePHP Creating Validators Sep 10, 2024 pm 05:26 PM

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

See all articles