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PHP object-oriented cannot read mariadb

PHP is written in an object-oriented way, why can't the data be read in the select with where (>ω<). &nbs

仰望星空 2020-06-05 15:20:11 0  1  1192

How to use mysqli to determine whether a MySQL database exists in PHP?

How to use the mysqli statement in PHP to accurately determine whether a MySQL database exists? In addition, how to determine whether a table in the database exists? In addition, what do the two styles provided in the official PHP documentation mean? Object-oriented style and process-oriented style....

淡淡煙草味 2017-06-14 10:49:52 0  1  1145

laravel - How to understand how to write this method in PHP object-oriented?

I accidentally saw this writing method on a blog today. I have never used it before and the meaning is not clear. I would like to ask you: Directly above the picture: I would like to ask you: {code...} How to understand the Callection after this colon?

滿天的星座 2017-05-24 11:33:50 0  1  508

How to access properties inside PHP?

Follow up on the basis of this document: https://www.php.net/manual/en/language.oop5.references.php A key point of PHP object-oriented programming that is often mentioned is that "objects pass by reference by default transfer". This is not entirely correct. In PHP, object variables do not ...

P粉518799557 2023-09-05 18:50:40 0  1  743

How to manage inclusions, requirements, and usage in this project

In this PHP project without framework I have this folder structure: adapters, classes and models php file "index.php" is executed from the root directory and I have a problem with model and adapter classes index file <?phpinclude ('Class/Load.php');$connection=MysqlClass::getConnectionM...

P粉652495194 2024-02-25 18:11:04 0  1  492

Teaching course preview for September 12, 2018: Detailed explanation of dom operations in Javascript

1. Teaching topic: DOM operation content in Javascript. (The full name of DOM is Document Object Model, which allows js scripts to control Web pages, windows and documents.) For more detailed explanations of JavaScript knowledge points, please pay attention to tonight's live class on time! Lecturer:...

藏色散人 2018-09-12 14:45:26 0  0  1440

How to get the constructor class name of the passed in object in PHP?

Suppose I have the following class structure: classLogger{publicfunction__construct(string$channel){//Logger initialization work}}classUsingLogger{privateLogger$logger;publicfunction__construct(Logger$logger){$this->logger=$logger;}}$logger =newLog

P粉413307845 2023-09-11 11:23:19 0  1  692

PHP - chmod(): Permission denied

I have a file owned by root and I want to change its permissions using chmod(). But it gives me an error chmod(): Operation substitution not allowed. if(file_exists($filepath)){chmod($filepath,0755);}PHP Error Response How to use chmod() in php but file ownership is root? Can I achieve this without ...

P粉475126941 2024-03-25 22:25:57 0  1  573

A Class is clearly created, but when referenced in another php file, it prompts class not found!

錯(cuò)誤提示： Fatal error: Uncaught Error: Class 'frameworkdbMysqli' not found in C:Users11500DesktopdemoProjecttestTest.php:7 Stack trace: #0 {main} thrown in C:Users11500DesktopdemoProjecttestTest.p...

世界只因有你 2017-06-16 09:18:31 0  3  1031

Some experiences and suggestions on Java

Some experiences and suggestions on Java: If you don’t have a foundation to learn Java, you must follow three steps: preview carefully before class, listen carefully in class, and review carefully after class. It looks very simple, but few can actually do it. In addition, Java is an object-oriented ...

黃武斌 2019-12-05 15:41:15 0  0  1303

php - How to add methods to an instance?

{Code...} If there is already an instance of class A, how can this instance also use the test method? What should I do if class A cannot be modified in php and python? If possible, use other packages when writing php before. , you will encounter that the call result returned is already an instance o...

某草草 2017-06-29 10:07:59 0  2  935

After cross-class call, method cannot be found

Do static method overloading to achieve chained access to the database exercise demo5.php references the Query.php class and then accesses the method in Query. The page prompts me that the method 'table' is not found in the Database. The following is the source code. I hope it can help. The first er...

方人胥 2021-06-12 17:16:18 1  2  1202

php 5.6 include php file directly outputs the file content without execution, and php5.2 will be normal.

As shown in the figure, the code for executing the file is as shown below. . . . As a result, the code in dbConfig.php is output directly to the browser. No analysis at all. Copy the code in dbConfig.php to the running php file. It is estimated that version 5.6 has upgraded the initialization and ex...

yoyo 2019-06-07 00:44:09 0  1  1250

A question about PHP memory management

I wrote a file to test the memory usage of PHP. I found that there is a difference in the memory occupied after the variables are arrays and objects after they are released. I would like to ask why. The following is the code, running in PHP 7.0 CLI mode. Array: {code...} Output: {code...} Object: {c...

給我你的懷抱 2017-05-16 13:11:22 0  2  533

How to import the contents of RTF format files into the editor in PHP?

The new function needs to extract the content from the RTF format file and put it into the input box of the unavailable input tag, as shown in the following figure. How to implement this function? Is there a method class in PHP to obtain it? .

北城浮生ぅ 2017-12-09 10:49:49 0  0  1185

My resume title

1. Be proficient in PHP object-oriented programming, strictly follow PSR4 specifications, and have good coding habits 2. Be proficient in common PHP design patterns (single case mode, factory pattern, etc.) 3. Be proficient in using TP framework and understand mainstream frameworks such as Laravel 4...

啦啦啦啦啦 2022-07-20 16:22:34 0  0  1148

Ask: Why can't the ajax submitted data be transmitted to the controller?

When I was studying the "Latest ThinkPHP 5.1 World Premiere Video Tutorial (60 Days to Become a PHP Master Online ** Class)" by teacher Peter.zhu, in the section "10-3 Preliminary Implementation of User Registration Function", why Why can't my ajax submission data be passed to th...

清晨的粥 2019-09-18 14:26:09 0  3  1358

PHP Chinese website's large-scale public welfare live broadcast is about to start! Develop PHP framework from scratch, and use the original development framework to imitate the Encyclopedia of Embarrassing Things website (ended)

Encyclopedia of Embarrassing Things (this tutorial belongs to the fourth tutorial of Tianlongbabu, a large-scale practical development project on the PHP Chinese website) Registration method: Click on the original text link in the lower left corner of this article Reply to the community post to part...

PHP中文網(wǎng) 2018-01-22 11:04:52 29  418  55909

Please how to solve this: Note: Undefined index: id in D:\phpStudy\WW\Student Management System\edit.php on line 13 Note: Undefined index in D:\phpStudy\WW\Student Management System\edit on line 18 Cannot convert object of class mysqli_result to int in .php

<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Student Management System</title></head><body><?php in

憶思?jí)羰?2017-11-21 16:20:04 0  6  2122

Laravel Modal does not return data

I don't know why I'm not getting the value from the modal in my Laravel controller. Please check it for me. However, I use the same code for other modes and controllers. It's working and returning the value from the property without any issues. I'm using Laravel8 and php8.1; below is my code. app\Ht...

P粉174151913 2024-03-29 10:31:31 0  1  586