What should I do if php tmp_name has no value?
php tmp_name has no value because it exceeds the size set by the system in php.ini. The solution is: first find the php.ini file; then modify the value of "upload_max_filesize".
The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer
What should I do if php tmp_name has no value? PHP file upload failed $_FILES tmp_name is empty?
When the PHP background is upgrading the App client, the files submitted through the form cannot be saved
After trying echo printing, it is determined to be echo $_FILES['app_file']['tmp_name']; Empty
There is no problem with the function of uploading pictures
Then print echo '
file error='.$_FILES['app_file']['error'] ;
file error=1
Cause
The file size exceeds the size set by the system in php.ini.
Then modify php.ini
upload_max_filesize = 20M
What is the difference between post_max_size and upload_max_filesize
One is the maximum value of uploaded files
One is the maximum value of data submitted through POST
Attachment
Common $_FILES system functions in the PHP programming language Usage:
$_FILES['myFile']['name'] 显示客户端文件的原名称。 $_FILES['myFile']['type'] 文件的 MIME 类型,例如"image/gif"。 $_FILES['myFile']['size'] 已上传文件的大小,单位为字节。 $_FILES['myFile']['tmp_name'] 储存的临时文件名,一般是系统默认。 $_FILES['myFile']['error'] 该文件上传相关的错误代码。
The following are the meanings of different codes:
0; 文件上传成功。 1; 超过了文件大小php.ini中即系统设定的大小。 2; 超过了文件大小 MAX_FILE_SIZE 选项指定的值。 3; 文件只有部分被上传。 4; 没有文件被上传。 5; 上传文件大小为0。
//
You need to set the following items in PHP.ini:
1. post_max_size =10M
The maximum data submitted by the form is 10M. This item does not limit the size of a single uploaded file, but limits the submitted data of the entire form.
The restriction range includes the form All content submitted. For example: when posting a post, the post title, content, attachments, etc...
2.file_uploads = On
Whether to allow file uploads, if it is OFF you will Unable to upload files.
3.upload_tmp_dir = "D:/APM/PHP/uploadtemp/"
The cache directory used by the system when uploading files. If there is insufficient disk space in this directory, you will Unable to upload files.
4.upload_max_filesize =2M
Maximum upload file size, this item is for the size of a single file when uploading files.
Recommended study: " PHP video tutorial》
The above is the detailed content of What should I do if php tmp_name has no value?. For more information, please follow other related articles on the PHP Chinese website!

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.
