Exec (), passthru ()-An error occurred while calling the system command.

The PHP file can call system commands and directly execute this php file on the terminal. it does not respond when accessing this file on the web server. what is the problem. Permission problems? Or something... The PHP file can call system commands

How to submit and upload images and scale the images to a specified folder

When submitting an image on a php page, how do I scale the image and keep only the scaled image ??? When submitting an image on a php page, how do I scale the image and keep only the scaled image ??? Reply content: When submitting an image on a

Apache2.4 about configuring a multi-port virtual website

I have already configured a website. now I want to change it to multiple websites. Do I need to change the information of the website I originally configured according to the online method? Or will the httpd-vhosts.conf directly overwrite the

Do you have any documents in your team? What content requires special documents for recording?

I have been writing a program for more than a year in a startup company from scratch. now the boss proposes to document the program so that new users can quickly get started with the project, I don't know what to write into the document. after some

Walle project configuration cannot be shared

1walle project configuration cannot be shared. for example, if I assign administrator permissions to other users, the other party cannot find the corresponding project configuration 1 walle project configuration cannot be shared. For example, if

Php5.3 down to php5.2

For project compatibility reasons, we need to downgrade php5.3 to php5.2. can anyone tell me. Ps. you have deleted the project compatibility reason for using rpm for php5.3. now you need to downgrade php5.3 to php5.2. can anyone tell you. Ps, which

Please give me some guidance

Picture description I received the cart_id from the array form from ios, and then returned the data to him after the foreach traversal. how can I return the data and the format displayed on the graph? Image description I received the cart_id from

How php retrieves data from mysql

Can the obtained data be output in a while loop only through mysql_fetch_array? For example, if my data is orderbyid, how can I get the last or first data? In fact, what I want to know is the format of the data taken out by php... is it strange that

Questions about leave time calculation

First, let's talk about the leave rules: 1. for morning leave, the duration should not be less than 3 hours 2. for afternoon leave, the duration should not be less than 5 hours 3. working hours: 9: 00 ~ . There is one non-working hour at noon. due

Nginx file permissions

Centos + lnmp writes data to the test folder using PHP. The permission setting is 766, But 777 is not required? Nginx runs www, and root centos + lnmp Write the test folder in PHP. The permission setting is 766, But 777 is required? Nginx

A question about real-time passenger flow, how to design a database and how to implement this function?

1. demand: now I need to present a public transit passenger flow. different displays are used to show the passenger flow of the bus. similar to the real-time traffic conditions in the map, all the statuses are manually set by the background. 2.

Delete question-how to delete a php product category?

{Code ...} Your location: item category column Category ID category tree Category name parent category ID parent category path item category management 6 appliances 0 0, modify | copy | delete 15 black/white TV sets 6, modify | copy | delete 27

Why can't php GET the $ _ GET value?

There is no exception during development on the local machine, and there are various problems when deploying it to the server. the REQUEST_URI parameter clearly has a value, but QUERY_STRING is empty... orz uses apache for local development. is

Php bubble sorting

Why can't I find the last one? Why can't I find the last one? Reply content: Why can't I find the last one? Make $ I = 0 in the first ======================================It is estimated that you copied the error and copied $ I to $ j.

Form verification in CI-unqiue

In form verification, is_unique is directly queried in the database, but you want to exclude yourself. how can this problem be solved? For example, if the user name (unique field) is beetle and the id is 1, when you modify user information, if you

WeChat public Test number configuration failed

I used thinkphp for development. obviously there is no problem with the server. Why did I use thinkphp for configuration failure when I configured the test number, why does the configuration fail when I configure the test number? Reply content:

[New person for help] why does the EOF error occur when connecting to the database of pymysql?

1. an error code is returned when you use pymysql to connect to the database: {code ...} 2. below is my code {code ...} 3. what does EOF error mean? what is the general solution? Python3.5 new student: 1. an error is reported when you use pymysql to

When using php to write the app interface, the token is given to the app client at that step.

When using php to write an app interface, what are the advantages and disadvantages of token given to the app client in that step, for example, obtaining the token before requesting any interface? the other is that after a user initiates a login

How does EloquentORM listen to its events and use memcache to cache data?

First, my website currently uses these components {code ...} because I used the symfony event-dispatcher component, but did not use the laravel events component, therefore, when the EloquentORM service is initialized, the built-in event listening

How does thinkPHP render two V-layer Template views in the same function?

I want to use different templates. one set of templates is red and the other is read .. {code ...} I want to use different templates. one set of templates is red and the other is read .. Public function addData () {$ this-> theme ('red')-> display (

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