PHP

When several users visit the website, the Website user login information is stored in sessions. Will the Later users overwrite the previous sessions? Login successful $ _ SESSION [& #039; userinfo & #039;] $ username Login User name. This operation

We recommend that 10 users use orderbyrand () at random, but a large amount of data affects efficiency. $ SQL & #039; selectuidfrommemberorderbyrand () limit10 & #039; or random uid, then find from uid, eg: {code ...} the problem is that the uid in $

Hello everyone, I used CodeIgniterPHPforeach to go through an email address form and found some emails that do not meet the requirements of regular expressions. The difficulty lies in the difficulty of listing results in the form of objects. Code:

$ Mysqlinewmysqli (& quot; 127.0.0.1 & quot;, & quot; root & quot;, & quot;, & quot; test & quot ;);...... $ res $ mysqli-& gt; query ($ query); $ row_cnt $ res-& gt; num_rows; number of records in the result set ...... is $ res an object? Why? (I

{Code ...} the database has been connected successfully. After the above code is executed, the echo $ result output is 1, indicating that the operation is successful, but the echo $ mysqli-& amp; gt; affected_rows output is 0, it indicates a failure.

I have an empty MYSQL database. How do I enter a large amount of random data into MYSQL to test the statement performance? You can skip PHP and directly use SQL to achieve better performance. target 0.5 million -- about 1 million. I have an empty

How to regularly execute a PHP program without the scheduled tasks on linux or windows? How to regularly execute a PHP program without the scheduled tasks on linux or windows? Reply content: How to regularly execute a PHP program without the

Macpro, php5.6 is installed with homebrew, and php-v is 5.6 in the terminal, but phpinfo () is accessed through the nginx server on the web page () it shows that php5.5 is still used by the system. This is the latest one. How can I solve the Mac pro

Database Structure: {code...} after the comments in the relevant article are read, I use recursion to display the comments. But now there is a problem. For example, if I display 10 Comments on one page and want to display the first page, I have read

Why did I install Apache and PHP on the D disk? In phpinfo (), I found the configuration file in c: Why did I install Apache and PHP on the D disk in windows, in phpinfo (), the configuration file is found in c: \ windows. Reply content: Why did

As we all know, the phpGD library can easily create an image from the URL. In GD, imagecreatefromjpeg () and imagecreatefromPNG ()... We all know that the php GD library can easily create an image from the URL. The GD contains imagecreatefromjpeg (),

How can this problem be solved? Notice: date_default_timezone_set (): TimezoneID & #039; Asiashanghai & #039; how is isinvalid broken? Notice: date_default_timezone_set (): Timezone ID 'Asia/Shanghai' is invalid Reply content: How can this

I am using the ubuntu Kirin version. After installing and configuring the lnmp environment, I used composer to install laravel4.2. The error 502 was reported. Check the nginx log and fpm log and find the following error: nginx. log: {code ...}

I installed WordPress and added my own HTML static pages. Now I want to call the scoring plug-in WordPress, how can I make my own pages, disguised as a new WordPress article? The page I wrote also has a scoring function. Now we know that we have

When you join multiple tables to query data, write multiple SQL statements for separate query, or write an SQL statement for joint query? When you join multiple tables to query data, write multiple SQL statements for separate query, or write an

The database uses Oracle11gPHP to connect to Oracle very slowly PHP to connect to oracle very slowly, reflected in, if not connected to oracle for a long time, then connect to oracle again, it will take 20 ~ 40 seconds. However, the subsequent

Zookeeper is a recent project (php + apache) that requires constant detection of the normal operation of WebSite Services. Currently, I think of the following methods: zookeeper 1. check apache httpd process Zookeeper 2. the Analysis of timed

I want to package the index. php file into a phar file. The file organization is as follows: index. php and 1. php are in the same directory. There is only one helloworld in index. php, and the code in 1. php is like this: {code...}. The running

Can PHP limit the function execution time to implement the following pseudo-code functions? {Code...} Can PHP limit the function execution time to implement the following pseudo-code functions? foreach ($jobs as $job) { try { run($job);

In general, we can direct the URL to a file under DocumentRoot to guide users to download the file. In general, we can direct the URL to a file under the Document Root to guide users to download the file. However, in this way, we can't do some