Problems with the PHP array foreach $key ranking

foreach($abc as $key => $val){这里是按照$key在做排序,但是中间有几个$val条件成立的人,要从排名中剃掉} Above, ask $key if shave off to delisting case, still normal sort As an example, 1, xiaoming 2, small white 3, small black 4, Little Red This is normal sort, but I'm going to

How to calculate an IP address that is not assigned

Now there is a section of Class B IP address 119.115.0.0--119.115.255.255, now I assign departments to use, but still left those addresses are not assigned out, through manual calculation is very complicated, because some address is very small, very

How can javascript interpreters such as PHP v8js just check the syntax of the JS code and not execute it?

Recently in the company with PHP to make a small software, there are several requirements for user-submitted JS code check its syntax. I installed the v8js extension and wrapped the submitted code in the function "var x = function () {User JS code}"

How does a chat room based on webscoket make private conversation?

So, I used PHP to do a websocket backend, you can send a message through pusher to the client of the subscription, so as to achieve a simple chat room function, and then want to further realize private chat, but do not know how to achieve better.

What are the specific problems encountered in web development, the knowledge of TCP/IP and HTTP can be used to solve related problems well?

, is currently learning TCP/IP details to ask, the web development of the specific problems encountered in the time, TCP/IP and HTTP knowledge can be used to solve the relevant problems well? Reply content: , is currently learning TCP/IP

Yii Framework uses XHPROF to report 502 Bad Gateway error in Nginx

This error is reported when invoking other class methods in a controller. Has anyone ever come across this mistake? In addition, without the framework, the method of invoking class in another file in a file does not error.Will it be the autoload

Questions about permissions for Apache server that comes with your Mac

Recently on the Mac with the Thinkphp development project, and then was written on the windows, directly installed a WAMP package, now with the Mac, and then the Mac comes with PHP and Apache, but due to its strict authority mechanism, There is no

Hash-How to solve the collision of PHP hash function

Recently want to use a hash function to generate a unique value based on a string, but did not find a good hash function, like PHP built-in MD5, SHA and other hash functions generated by the value is too long, I can not use, want to intercept, and

pecl-php Extension API version

Recently in writing a PHP extension. There is a slight change in the internal iterator interface functions between the two versions, with the following differences: {php-src}/Zend/zend_interface.c (in 5.3.X): ZEND_API void

PDO Error dibidriverexception:sqlstate[hy000]:

Database Configuration page "SET NAMES utf8" )); dibi::connect(array( 'driver' => 'pdo', 'pdo' => $dsn, 'lazy' => true, 'profiler' => array( 'run' => TRUE, ), )); $dibi = true;}

PHP millions per hour of Curl request server lost data

The following scenario is described directly in detail: Server A will forward the curl amount of millions per hour by forwarding the data to Server B.curlThe request is a 0-byte file on Server B, as long as the request is recorded in Server B's

Modified the WordPress installation directory, and then the article all appeared 404 error, How to break

I modified the WordPress installation directory myself, and then the article all appeared 404 error, How to break The original WordPress installation address is HTTP://127.0.0.1/ I moved the installation directory to the UED directory, and now it's

Why do I log in to a site in a, someone else opens the site in B, which shows my account is logged in?

Q: Why do I log in one place (such as Beijing) after someone else logs in to the site in another location (such as in Shanxi) and displays my account directly? For example, I login in Beijing Segmentfault, other people in Shanxi opened Segmentfault

Website architecture-Some doubts about PHP framework

I wrote the struts all the way a few years ago, and then started using PHP, like the simplicity of PHP. With the growth of the project participants, there must be a norm, to have the process, so began to study a number of frameworks, they also

Customer service side How to return binary or binary data to the server

1. Android as Client 2, PHP as a service-side Now 1 to return binary or decimal data to 2 How should the data format be returned more reasonable? Reply content: 1. Android as Client2, PHP as a service-sideNow 1 to return binary or decimal data

PHP upgrade-running servers, how to smooth upgrade from php5.2 to php5.3, Linux+php-fpm+nginx

Architecture is Linux+php-fpm+nginx, do not want to stop the service, it is best to/etc/init.d/php-fpm reload a bit on the health upgrade completed. Reply content: Architecture is Linux+php-fpm+nginx, do not want to stop the service, it is best

codeigniter-php CI Framework core/common.php Some of the functions in question?

if ( ! function_exists('is_php')){ function is_php($version = '5.0.0') { static $_is_php; $version = (string)$version; if ( ! isset($_is_php[$version])) { $_is_php[$version] = (version_compare(PHP_VERSION,

Alibaba Cloud OSS PHP SDK Use error

In order to reduce the local server pressure, just start using HTML form directly upload, very unstable, and sometimes 10M files can not be uploaded, sometimes more than 100 m will be able to upload, but also can not use Ajax or uploadify and other

PHP Automatic Loading-php namespace namespace how to implement automatic loading

Test namespace will load automatically, but the two files I have tested are not loaded automatically: #/DB/MySql.class.phpnamespace DB;class MySql{ public function __construct() { var_dump(__FILE__); }} #/index.phpnamespace Home;use

What does sockets in PHP have to do with flow?!!!!!

Under what circumstances would we use such a high-level thing? Especially about the flow. Under what circumstances will the flow of such things be used? Establishing a long connection does not mean that PHP is not allowed??? So what are some of the

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