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 =>

Php regular expression matches a tag

In {code...}, the specific value of id in href must be matched, the value of a tag, and the content in the following div. It feels complicated. please help me. Content to be matched

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.

How to obtain swoole asynchronous mysql callback data in a request

1. view the swoole document to see only the implementation of asynchronous mysql, but not the specific application, or maybe I did not see it. I want to ask in a request that I use asynchronous query of mysql, the asynchronous query will call

Error_reporting () sets the PHP error level

Error_reporting (E_ALL ^ E_NOTICE ^ E_STRICT ^ E_DEPRECATED); guys, help me explain what consciousness this line of code is, set the error level, error_reporting (E_ALL ^ E_NOTICE ^ E_STRICT ^ E_DEPRECATED ); Guys, help me explain what consciousness

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

Based on the existing WeChat api, how can I make payments on the app end?

The current situation is that, based on the existing api, the data is returned to the app end, there is a problem that the payment page cannot be adjusted? How can this problem be solved? The current situation is that, based on the existing api, the

An error occurred while querying the alias of the same two tables laravel. how can this problem be solved?

{Code ...} there are many errors: Table & #039; startbbs. stb_usersb & #039; doesn & #039; texiststb_users I need to use it twice. I must take an alias. what should I do? $res = DB::table('topics')->select('topics.*', 'b.username',

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

Javascript-no suffix link?

The a tag & amp; lt; ahref & quot; firm_CN_c4ee755e2e3f111b6ce715d7e99e0b3b & quot; & amp; gt; is displayed on a website. if there is no suffix, click it to go to the new page, how is this implemented? This a tag is displayed on a website. Without a

Javascript-how to avoid form submission and trigger the beforeunload event

The specific requirement is as follows: bind the beforeunload event to the window and check whether the switch or close page has saved the input content. However, when you click the submit button, the beforeunload event is also triggered, how can I

Php message table design

Php has a page for sending a message by clicking and sending it. my public account is like a user who has specified to follow the public account change. for example, if the boss sends a notification like an employee, the employee opens the page and

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