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PHP connects to the database, mysql_connect cannot be used

PHP connects to the database. The integrated environment used by mysql_connect cannot be used. There is no text in the red box originally. Baidu query added it and the file is in the folder. There is no problem with mysql. . Please tell me, God, what is the reason for this?

A? 葉 2019-12-16 17:42:17 0  2  1217

How to configure mysql remote php external network link database

$con = mysql_connect("47.107.159.50:3306","root","root"); After using phpstudy to configure the mysql database on the Alibaba Cloud host, the php code is linked to the database. How to fill in the database address?

、‘（）’ 2019-01-12 11:09:47 0  3  1360

Common methods for connecting to MYSQL database with PHP

After configuring a Xiaoniao cloud server and deploying a PHP environment, what are the common methods for connecting to a MYSQL database?

想無 2021-09-07 13:56:33 0  3  1196

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

The oci_parse() method returns null parsing method

I want to create a class that connects to an ORACLE database using some OCI methods. But when I call the Parse() method it is null and my FetchArray() method returns nothing Database PHP class: classDatabase{/***@varstring*/privatestring$login;/***@varstring*/ privatestring$password;/***@varstring*/...

P粉043432210 2024-01-29 13:46:11 0  1  695

tp5.1 Why does it sometimes show that the database cannot be found when connecting to mysql in the php toolbox, but sometimes the connection is successful?

tp5.1 Why does it sometimes show that the database cannot be found when connecting to mysql in the php toolbox, and sometimes it can connect successfully. The error display is the page that often appears. When it succeeds, it can connect to the database successfully, and the data inside can be read....

對方正在輸入。。。 2018-11-29 10:34:13 0  0  1083

Solve the problem of operation error when pythonanywhere connects to MySQL database

I have finished my django project and I want to test it on PythonAnywhere, everything was fine until the mysql database connection showed an error to which I have paid subscription. An operation error occurred on /home/ (1044, "Access to database 'almx98' for user 'almx98'@'%' is denied") ...

P粉459440991 2024-03-31 22:43:19 0  1  686

After phpstrom connects to mysql, writing code does not prompt for database fields.

Do you need additional settings?

小周 2018-07-17 10:01:21 0  4  1468

Class library, how to use it, is there any detailed method?

My MySQL class library in PHP, after loading it with include, can only define variables. How to use the functions in it? It is useless to write the function name directly. Please give me a detailed method. Thank you.

哈哈哈哈。 2018-07-12 11:54:40 0  6  1387

How to test whether PDO calling method is successful

When using PDO, the database connection is normal, but when running this code, the page displays neither results nor errors. Is it because PDO on my side cannot call its method? <?php/** PDO connects to the database */include 'pdo_conf.php';$dsn = "{$dbType}:host={$host};dbName={$userName}&q...

邯鄲易住宋至剛 2019-08-03 19:08:25 0  2  1703

PDO's automatic submission function is enabled on MySQL with autocommit turned off

I've just been assigned a codebase that uses traditional PHP and the library works without using PDO. The connection is made using the following mode: //Connect to the MySQL database $con = new mysqli($host, $user, $password, $database);//Check the connection if ($con->connect_error) {die(\"...

P粉011912640 2023-08-08 15:23:46 0  1  626

Who has written PHP (thinkphp5) to share the class library for connecting to Oracle?

I haven’t studied Java yet, but I want to use PHP to create several pages to read the contents of the Oracle database. Please help!

Chrysan Sun 2017-11-17 07:50:32 0  3  1451

How to display single SQL query results in PHP

I have a query about this php code and can't display the results in echo, can I convert to string? //conexion is my function that connects to the database and is completed $costTotal=conexion();$costTotal=$costTotal->query("SELECTSUM(product_cost)FROMproduct");echo$costTotal;For example...

P粉852578075 2023-08-17 20:30:29 0  1  689

Does MySQL disconnect after the php script is executed?

There is a SQL statement that connects to mysql in a script. When executed, the mysql server opens a new thread (or process?) to process the connection. After the script ends, does it disconnect from PHP (or apache?). What are those mysql long connections? Suddenly I feel like I don’t understand any...

PHP中文網 2017-05-16 13:06:27 0  5  967

This error occurs when inheriting the abstract class aDB. If you do not inherit, no error will be reported.

<?phpabstract class aDB{ /* *Connect to the database and read configuration information from the configuration file */ abstract public function conn(); abstract public function query(); // abstract public function getAll();}class Mysql extends aDB{ public $link; /*

L 2019-05-26 01:11:48 0  1  1257

Should the name of the Model's PHP file be the same as the database name?

Should the name of the Model's PHP file be the same as the database name? Or do the class names need to be consistent?

劉磊 2018-11-01 13:56:50 0  1  1720

Undefined constant 'text' in /home/jokebo/public_html/index.php:23

I have a PHP project that connects to a SQL database. The problem is that I cannot access the value of text in the following code: $sher=$db->query("SELECT*FROMsher1ORDERBYRAND()LIMIT1");$matn=$sher[0][text];What's wrong? How can I fix it? Access table values ??in array

P粉422227023 2023-09-16 16:33:51 0  1  846

Why can't I connect to the MYSQL database?

After following the PHP toolbox, it shows that the database is connected, but it cannot connect to the MYSQL database. The call displays "Execution failed, please refer to: No database selected"

自由天空 2019-07-12 11:57:45 0  2  1597

How to build cross database query in PHP?

In our last episode (How to Build Cross-Database Queries in MySQL), I learned how to build cross-database queries in MySQL. This worked great, but when our hero tried to use this newfound knowledge in PHP, he found that his best friend failed. I looked into PHP's mysql_select_db. This seems to mean ...

P粉197639753 2023-10-22 11:40:00 0  2  829

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  1197