PHP

This article introduces the usage of regular expressions. Today, let's take a look at the basic usage of common Regular Expressions in php. If you have any need, refer to the following. This article introduces the usage of regular expressions. Today,

This article introduces the program code for uploading images to the server in PHP. This program not only uploads images but also adds watermarks to uploaded images. For more information, see. This article introduces the program code for uploading

Here, we use curl to send requests to the PHP file of the local server through curl to the remote server for receiving upload, another method is to use ftp for uploading. It is also the curl operation in php for uploading on the ftp server. Here, we

When I was a beginner in php, I knew to use the replacement function to replace the specified number. But we need to simply replace the specified position. Below I will introduce several examples to show the asterisk. When I was a beginner in php, I

The following is a database operation code commonly used in self-developed applications. There are two files below: configuration files and operation database files, finally, we briefly list the call methods of this example class. The following is a

How can we use php to calculate the distance between two GPS longitude and latitude coordinates when using Baidu map? Now we will share the function code with you. How can we use php to calculate the distance between two GPS longitude and latitude

I believe everyone knows about the red envelope function. But if we want to integrate the red envelope into the website, what should we do? The following small series will share with you a php red packet interface test example. I hope the article

What are the new features of PHP 7? The new features of PHP7 mainly improve the performance. We can achieve the acceleration performance without using the php acceleration plug-in as long as php 7 is used. Is that true? Let's take a look at the new

Sometimes the database is damaged due to power loss or other reasons. We can use the mysql mysqlcheck command to quickly repair all databases or specific databases. For example, we can check, optimize, and fix all databases: 1. run CMD to start the

When I first came into contact with SQLServer, I thought that the SQLServer data will be updated at the same time. In fact, SQLServer does not. Based on performance considerations, SQLServer uses the following algorithm to update statistics. When I

CURSOR is also called a CURSOR. It is often used in relational databases. In PLSQL programs, you can use CURSOR and SELECT to query and read data in tables or views row by row. CURSOR is also called a CURSOR. It is often used in relational databases.

We can create a separate OracleCommand to insert the specified data. Here we only introduce the data of the clob type. blob is similar to this. Here we will not introduce it. The following two methods are described. We can create a separate

Mysqlnotin, leftjoin, ISNULL, and NOTEXISTS efficiency issue records. For more information, see. Mysql not in, left join, is null, not exists efficiency issue records. For more information, see. Comparison of not in, JOIN, is null, not exists

Using these parameters, we can construct the following example to solve the problem of deleting backup script files. You can create a script based on the modified date or backup type. You can even construct scripts that can reference both standards.

Php's associated data usage and some tips for associating arrays, including adding, deleting, editing, traversing, exchanging keys and values, sorting, querying, and other associated array instances. Php's associated data usage and some tips for

Although php comes with an encoding conversion function, character loss occurs during use, in order to solve this problem, I have compiled two functions for converting the encoding of non-GBK character set into GBK and converting the encoding of non-

When a 404 error bad_url error is automatically generated when a deleted file is created, the generated txt file does not have line breaks. After being submitted to Baidu, the system prompts a format error, I will share with you the solution to this

It is estimated that many programmers will not think about PHPsession concurrency and session read/write locks, because in general, we will not use session for concurrent operations, but sometimes we may also use it, the following is a session

We will not use the Laravel framework much, but if you need to use it together, let's look at a detailed tutorial on building the phpLaravel framework. The specific operation details are as follows. I hope you can help. We don't need to use the

Share the database backup and recovery methods using the query analyzer in sqlserver. If you need to back up or restore the database, refer Share the database backup and recovery methods through the query analyzer in SQL server. If you need to back