Programmer Help

Array function 1 – count array length $array1 = array(1,2,3,4); length=count(array1); print_r($length); The printing result is: 4 Note: php needs to print string with print ur; 2 – array? Shift removes the first element from the array and returns $array1 = array(1,2,3,4); $arr = array_shift( $array1); ...

Indexes View index db.Ttest.getIndexes()； A kind of db.getCollection('Ttest').getIndexes()； New index #New index for time field db.Ttest.ensureIndex({"LTimeB":1}) query Nested array for paging query #Z118005 this is a nested array db.getCollection('Ttest').aggregate([{$match: {"_id": ObjectId("5a53136a ...

Tiktok has been busy and has no time to record notes. Here, the author rewrote the code records according to the rules of the open interface of the jitter, which is convenient for later use and also for reference.The code is as follows. The way of calling is js,html, and php mode. I have screenshot of the generated style. Insert picture descri ...

One install php Install php and execute the following command sudo apt-get install php Install PHP FPM - remember your version of PHP FPM sudo apt-get install php-fpm 2. Install nginx Install nginx and execute the following command sudo apt-get install nginx Enter nginx configuration directory ...

1. Foreword Kangsheng's authcode function is very powerful. It is an encryption and decryption function with a valid period. The results of each encryption of the same character are inconsistent, and you can customize the expiration time. Design principle: authcode uses exclusive or operation to encrypt and decrypt. encryption Clear text: 1 ...

Nginx anti theft chain Stealing chain refers to that one website's resources (pictures or attachments) are not allowed to browse and download in other websites, especially the stealing chain of popular resources, which consumes a lot of bandwidth; Modify profile [root@dl-001 ~]# vim /usr/local/nginx/conf/vhos ...

1, When PHP array variable $arr is assigned to another variable $one, the whole array variable $arr is copied to $one, even if $arr is a multidimensional array. Example: $arr = array(1, 2, 3, array('one', 'two')); $one = $arr;# Output original array $arr print_r($arr);　　# Array ( [0] => 1 [1] => 2 [2] => 3 [3] => Array ( [0] =&gt ...

About Nginx Nginx official website nginx.org, the latest version 1.13, the latest stable version 1.12, nginx application scenario: Web services, reverse proxy, load balancing, nginx famous branch, Tengine developed by Taobao based on nginx, which is consistent with nginx in use, the service name and configuration fi ...

1. Atomic concept Atom is the basic unit of regular expression import re #Ordinary characters as atoms pattern = "baidu" string = "http://www.baidu.com" result=re.search(pattern,string) print(result) import re #Nonprint characters (. Control symbols) as atoms pattern = "\n"#Line break string = """http://www.baidu.com http:www.so.com""" ...

Set up the discoz (2) 3. Configure user authentication Write the following to httpd-vhosts.conf:<Directory *> AllowOverride AuthConfig AuthName "Custom text" AuthType Basic AuthUserFile /data/.htpasswd require valid-user </Directory> . htpasswd needs to be created with / usr/local/apache2/bin/htpasswd;/usr/local/ap ...