PHP

Set the session expiration time in php. In apache and php environments, the default expiration time is about 20 minutes. how can we set the session expiration time? The following is a summary of the specific methods. The most common method is to set

Description of mutual conversion between the PHPIP address and integer type. Yesterday, to determine the source of the user's IP address, and then enter the address of the CIDR block where the user's IP address is located, we need to implement the

Iframe: The Implementation Program for refreshing file uploads. Iframe: in fact, the upload program page is opened on the current page, a bit like a partial ajax refresh, but we put it to the iframe page for upload, at the same time, our iframe

PHP generates random string program code. Because the tool requires us to write a function that can generate random strings. I think there should be a lot of such random string generation functions on the Internet, baidu gave me a bunch of functions

Php matches the link address program code in characters. Yesterday, if a friend asked me a question, could I check whether the data submitted by the user contains a super connection? if so, I directly filtered the data, next I will introduce you to

Php provides a summary of various methods for searching array elements. In php, data queries can be classified into one-dimensional array queries and multi-dimensional array queries. if it is a simple one-dimensional array, we can directly use

PHP uses curl_init to initiate an http request to simulate logon. There are two types of http requests: common http request logon and https request logon, next, I will introduce to you in detail how to use curl_init to implement htt http requests.

Php displays the call code for random ads. This article introduces how to call random ad display using txt and php. The principle is simple. We put the ad file into the txt file. when a user accesses the file, we load the txt file, this article

How to rename the uploaded files and add watermarks in ckeditor. This article describes how to use ckeditor to upload a file, rename the file, and add the watermark configuration. First of all, I want to introduce the uploaded files to you in this

Php anti-Chinese characters to Unicode encoding implementation program. This article introduces the php program for converting Chinese characters to Unicode encoding. For more information, see. The program code is as follows: Copy the code *** $ str

PHP sets the image browser cache method. Whether you use php to open the browser Cache or use apache, we will operate the Cache-Control on the browser to configure the iis server environment, next, I will introduce you to the PHP settings. no matter

Phpcurl spoofs the IP source program implementation code. Today, I have nothing to do with my own phpcurl to forge the IP source program instance program. here, I can forge the IP source, counterfeit the domain name, and forge user information. For

PHP converts the encoding of all files in the folder. This article will introduce the encoding of all the files in the conversion folder using PHP. this is suitable for editing multiple files in batch conversion at a time, note that you only need to

PHP bubble sorting and binary searching for instances. We learned the bubble sort and binary search sort algorithms when we were in junior high school. next I will introduce some examples of the bubble sort and binary search in PHP. We learned how

Phparray_flip () and array_uniqure () delete repeated elements in the array. There are several functions for deleting repeated array elements in php. one is array_unique () and the other is the array_flip () and array_uniqure () functions, but the

Php article content paging instance program. We want to write a paging program for Native articles. The principle is very simple, that is, we insert a paging character in the editor during editing, then we can directly use explode paging when

PHPcurl obtains the response status instance. PHPcurl can simulate an http request from the server, such as crawling webpages and simulating login. According to the option settings, you can get the response header and body in the returned result of

Php verifies the mobile phone number. We used php regular expression to verify mobile phone numbers. The rule for mobile phone numbers is to have 11 characters and start with "13, 15, 18, in this case, we only need to classify and plan and verify

Php converts IP addresses to integer instances. It is a common practice to convert IP addresses to integer data and save them to the database, the IP address conversion algorithm is intIP256 * 256*256 * w + 256*256 * x + 256 * y + z, next, convert

Php randomly generates strings. I have mentioned how to generate a random password. next I will introduce some common functions for generating random strings. these are our custom functions, of course, there are also built-in functions that we