PHP

This article will introduce some of my frequently-used php user registration user name and password verification functions, as well: email format, mobile phone number format, QQ number format, telephone number format, including area code, check

Most of the sessions are stored on the server, but today we have a function that is to save the session in the database, so that we can perform multiple browsing with ie, let's take a look at the specific implementation example. Most of the sessions

The array_filter function can be used to filter out elements with null key values. The array key name remains unchanged. If you want to filter the key names from 0 again, you can use the array_values function. The array_filter function can be used

Unlink is used to delete files in php. If a single file is deleted, we can use unlink directly. If the file is deleted in a directory, We need to traverse the directory and perform recursive deletion. The following is an example. Unlink is used to

Namespace is a "namespace", also known as "namespace", a code organization used by various languages in php. namespace is used to classify namespaces recently used in learning, first, record some knowledge in the manual. Namespace is a "namespace",

Usage of the spl_autoload_register function in PHP, Spl_autoload_register (PHP 5> = 5.1.2) Spl_autoload_register-register _ autoload () function DescriptionBool spl_autoload_register ([callback $ autoload_function])Register the function to the SPL _

When an error occurs in the mysql database, you can use the mysqlcheck command to fix it. Click Start-run and enter c: mysqlcheck-r-u user name-p Database Password-h server address database name press ENTER can be, such as: c:

To improve the efficiency of database operation, we need to hit the execution plan as much as possible to save the running time. To improve the efficiency of database operation, we need to hit the execution plan as much as possible to save the

This program is only for php + mysql fans to learn and test. During the test, errors may occur. Please modify this program according to the error prompt. This program is the installation version and run the install directory first, then follow the

If you use php to collect articles instead of using tools, if the addresses in the articles are not replaced by the addresses of other websites, the following describes how to use the preg_match_all function to occasionally download and replace the

There are several types of files written in php. One is implemented using the fopen and fwirte functions, and the other is using file_put_contents for read/write. I will introduce their usage below. There are several types of files written in php.

The file_get_content function has always been used to capture remote content. In fact, the existence of such a good thing as curl has long been known. However, after a glance, it seems complicated to use, not as simple as file_get_content, that is,

In php, the date function can directly convert the timestamp into a date. Of course, there are some other methods. I won't talk much at the beginning of the article to avoid getting more and more difficult to understand, let's take a look at some

The function can find the location through the relevant function sample. This is the first time that I have heard of this question. However, this function is really effective for testing, now let's take a look at the two code functions. We can find

When we use php to download a file, you will find that the file to be downloaded is large, but the developer does not use Accept-Length to obtain the downloaded file size, next let's take a look at the example of how to get the size of the

Php itself is not ideal for multi-threaded processing, but if we use pthreads, the performance will be improved. Let's look at a PHP multi-threaded pthreads example. php itself is not ideal for multi-threaded processing, however, if we use pthreads,

I have introduced many methods for sorting two-dimensional arrays. Here I can see a php two-dimensional array multi-element sorting example written by a netizen. Let's take a look. I have introduced many methods for sorting two-dimensional arrays.

There are spaces and ascill spaces in php, so we need to sort them together to replace them, let's take a look at an example of php replacement and filtering of all the blank characters and spaces. In php, there are spaces and ascill spaces. So we

Determining search engine spider crawlers is actually very simple. You only need to determine the source useragent and then check whether there are any strings specified by search engine spider. Next let's take a look at the php Method for

If you need to reinstall Mysql in special circumstances, you should do the following: 1. if the previous database still needs to be used, you should back up the entire Mysql directory after stopping mysql. the command to stop mysql is as follows: