Is there a large amount of data in 1.37 million rows? it is very slow to query this table. I don't know how to optimize it?

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Can a certain type of php be expanded to the global scale?

If your project is filled with statements such as global $ app, is there a way to use $ app directly instead of global $ app? Your project is full global $app;There is no way for such statements global $app;Direct use $app? Reply content: Your

Laravel5.2.9-phplaravel add the $ request-> all () field

Php code {code ...} vue Code {code ...} how can I add a field to $ request-& amp; gt; all () before saving it? php code Public function store (Request $ request) {$ name = $ request-> get ('namne ', 0); $ newname = $ request-> set ('newname ', 0); /

When javascript-php creates the default menu selection status, which of the following is faster than the jq loop?

For example, if the menu is in the ulli Structure & amp; lt; liclass & quot; active & quot; url & quot; xxx & quot; & amp; gt; format, is it faster to use php regular url to add active or jq to traverse all ul's li resources? there are multiple ul

File information cannot be obtained during php Upload.

I use ajax to upload files to Php. all files within the range of Php file size can be obtained, however, if the file I uploaded is mb, php won't get anything. print the returned information as follows: array (0) {} NoProperties does not use php,

The video tag on Apple cannot correctly read the video stream output in the background.

Write a small website and use the video tag to play the video. you need to separate the video file (both MP4) from the website file. Therefore, you can output the video stream by reading the video in the background, normally accessed on PC and

Update-phpmysql replaces a string in the delimiter

Suppose there is a column in mysql. a user adds three new documents: "Hello, I am very good, JoyseChen likes you." "No, I am very bad, JoyseChen likes you." "Are you good? can you catch the column ?" for example, I want to change the value of this

How do you annotate functions?

One is beautiful, the other is clear, the other is beautiful, and the other is clear Reply content: One is beautiful and the other is clear at a glance /*** Obtain the product list by category * @ param $ shop_id shop id * @ param $ cate_id

Javascript-how can the front-end defend against data collection?

How can the front-end defend against data collection? Is there any good implementation solution? How can the front-end defend against data collection? Is there any good implementation solution? Reply content: How can the front-end defend against

Mysql vertical split data table

During the development process, I encountered the following problem: there is an article table in the database to save the relevant information of the article (for example: title, content, author, creation time, number of favorites, etc.), there is

How is PHPPDO pre-processing cached?

We recently used pre-processing SQL (prepare) for the following two reasons ). High efficiency. Prevents SQL injection. After reading the official documentation, php.net data objects are still confused. Whether the efficiency will be improved or not.

Why is an error always prompted after mkdir is used ??

After Execution, the file can be successfully created, but the error prompt Warning: mkdir (): FileexistsinD: wamp64wwwaaa is always displayed. phponline26 should not have $ name2 before executing this sentence {code ...} after Execution, the file

Yii2.0 database query operation

The following describes some simple operations of Yii2.0 on database query. The following describes some simple operations of Yii2.0 on database query. User: find ()-> all (); this method returns all data; User: findOne ($ id ); this method returns

Php program generated by thumbnails

Page uploaded by the php program client generated by the thumbnail: ------------------ Upload.htm --------------------- Method = "post" action = "upload. php"> Select or enter the upload File name: --------------------- Upload.

Php counter program

Php counter Program 1) text counter $ Countfile = "/count.txt"; // sets the file for saving data If (! File_exists ($ countfile) {// checks whether the file exists. Exec ("echo 0> $ countfile "); } $ Fp = fopen ($ countfile, "rw "); $ Length

Keyword replacement and link in php document content

* ** Add a link to a keyword in the content * only process the keyword that appears for the first time, and do not add a link to the key of the existing link. it supports both Chinese and English /** * Add links to keywords in the content * Only

Php.net news interception

Php.net news interception // Modify the following variables by yourself. $ Newsnum = 7; $ Space = 20; $ Width = 400; $ Headclass = "class5 "; $ Lowerclass = "class6 "; // Variable setting ends. Print" $ Opened = $ QUERY_STRING; If ($ opened = "")

Php chat room application implementation methods

Chat applications are very common online. Developers also have many choices when building such applications. This article describes how to implement a PHP-AJAX-based chat application that can send and receive messages without refreshing the

Mysql initialization is stuck

Mysql initialization gets stuck. MYSQL has been installed here for a long time. do you think it is dead and the program installation is wrong? If you are smart, you may find that the actual MYSQL has been installed successfully. it will take a while,

Git-essential procedure for new recruits

I have been using svn for code version management all the time. The git used by the new company has been used several times on github, but the use scenario is too simple, compared with the development scenarios of multiple branches, even if they

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