Protectedstatic $ member_id; // What does this line of code mean? I did not write it like this. I can't understand it in an instant.

Protected static $ member_id; {code...} protected static $ member_id; Class TokenController extends CommonController {protected static $ member_id; Reply content: Protected static $ member_id; Class TokenController extends CommonController

Composer source update error

Running {code...} on the server today prompts me that {code...} does not know why? Is there an image problem or is there a problem with my local certificate or something running on the server today? composer update The message returned to me is: >

Explanation of php operator priority

After reading the php operator priority, I can understand the example above in the manual, but I cannot understand the {code ...} I have read the php operator priority and can understand the example above, but I cannot understand it. echo "1+5". 1+5

Javascript-is the background easy to use iframe or Ajax?

I bought several background templates at wrapbootstrap.com and read the following structure: either ajax or static. My project uses yii2, so there is no problem with the integration template. at the beginning, I wanted to load the main part of the

How does html-php obtain multiple input values with the same name on the page?

Html code: {code...} php code: {code...} I can only get the first one. How can I obtain all the html code submitted using a form: Php code: $imgs = $_FILES['imgs']; In this case, I can only get the first one. How can I obtain all the information I

Several questions about the interaction between the server and the mobile end

I am working on PHP. recently I have been working on interaction with ios and Android, so there are several problems. 1. how does one record the information of the currently logged-on user after logging on to the mobile terminal? does the web end

In the database, how does one share a table for all users, but each user's order number is an independent namespace?

1. Actual scenario: the order table in the database is public, and all users are on one order table. How can I make the order number of each user an independent namespace? For example, if user A has placed two orders, his order numbers should be C001

Thinkphp encountered ranking and paging issues during query

When the two tables are joined to query the data, the ranking will be affected by the page, and the ranking will only be performed on the current page. how can this problem be solved? When the two tables are joined to query the data, the ranking

How to understand this php code; use references to implement an infinite hierarchical tree array;

{Code ...} Function genTree5 ($ items) {foreach ($ items as $ item) $ items [$ item ['pid '] ['son'] [$ item ['id'] = & $ items [$ item ['id']; return isset ($ items [0] ['son'])? $ Items [0] ['son']: array ();} analog data: $ items = array (1 =>

How can I save the original data after submitting and refreshing the TP framework?

For example, how do I save data in the text box when refreshing the page after the content is invalid? No Framework. I know how to save the data with TP. I don't know how to save the data with a session? If the data cannot be submitted and then

After promise, how does the factory in Angularjs update data in controller?

{Code ...} code objective: to execute the controller in sequence. in the event of factory initialization with the name mainClass, the mainClass is asynchronously initialized, and the data is obtained from the background and updated to its own this.

Database (MySQL) unexpected error occurs on the page?

In the framework, how does one disable the database (MySQL) from accidentally reporting errors? For example, I have two excel sheet Upload functions. of course, I have two different processing methods for reading data in excel, but you know that the

HTML string parsing display

I saved a string in html format in the database. now I need to display and display the correct html format on the interface. What should I do? Image description I saved a string in html format in the database. now I need to display and display the

How can I optimize the connection query of a table in the Mysql database?

The query of two tables is slow, but the query of one table is fast, or the query of other tables is fast. Query statement (query time in about half a second): {code ...} member table structure (about 40000 pieces of data): {code ...} gift table

How to follow the php file path?

The PHP file can be followed by the path. For example: forum. sunhb. meindex. phpadmin. how can this problem be implemented? how can I write code? Thank you. (For beginners, please be patient and answer, thank you.) after you find the php file, you

PHP websocket image upload problems

To upload images through websocket, you need to understand the following: 1. Listen: first, you need to suspend a process to listen for the request from the client. 2. handshaking: for the first legal request, send valid headers back 3. keep the

Move the site, the picture is not displayed

When uploading a website, the database is connected normally, and the image connection is normal. However, you are not authorized to directly access the image by using the connection. However, the image folder is 777, and the image file is 755, the

How does PHP quickly determine the user level based on user points?

Based on user points to determine the level {code...} How to quickly and efficiently determine the level based on user points? If so, several pieces of data can be determined. if it reaches 100 if, the efficiency will decrease. Is there any good way?

ONUPDATECURRENT_TIMESTAMP is invalid.

In the MYSQLupdatetime field, ONUPDATECURRENT_TIMESTAMP is set. but after the UPDATE operation is executed, what is the possible cause of the time in the database or the time when it is added? {Code ...} MYSQLupdatetimeField setON UPDATE

How does MySQL Query the latest information of all users?

If you want to use groupby, but it can only display the first entry, but not the latest one, you want to add orderbytimedesc, but orberby can only be added after groupby. Is there any way to query the maximum or minimum data row in the group of

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