unset array

An array is a set of elements of the same data type arranged in a certain order, that is, a variable of the same type is named with a name and then numbered to distinguish their set of variables, which is called an array name, and the number is

This article prepares 70 shell script interview questions and answers, and shell scripts are the skills that must be mastered in Linux work.1 How can I pass parameters to a script?./script argumentExample: Display file name script./show.sh

1. Any number of parameters of the function You may know that PHP allows you to define a function of a default parameter. But you may not know that PHP also allows you to define a function of an entirely arbitrary parameter Here is an example of a

Is it possible to encounter such a situation? Each acquisition of data will have a certain difference between the data and the historical version, but with the thinkphp AddAll () function, the existing data will be deleted and then re-written. This

= array ( 'Name'= ' Shia ', ' Age ' = = Json_encode ($arr); echo $jsonencode;? >The results of the program run as follows:{"Name":null,"Age":+}Json_encode function in Chinese is encoded as NULL, Google a bit, very

PHPfunctionCombine$array,$start,$key,$newkey){ Static $new;//Static Variables foreach($array as $k=$v){ if($v[$key]==$start){ $new[$v[$newkey]][] =$v; unset($array[$k]); Continue; } } Sort($array); if(Count($array)!==0) {Combine ($array,

1, pass any number of function parametersWe're in. NET or Java programming, the number of general function parameters is fixed, but PHP allows you to use any number of parameters. The following example shows you the default parameters for PHP

This article mainly introduces the message reply class of the public platform developed by the public account, provides its complete example, and provides annotations to facilitate understanding and application, it is of reference value for the

Definition of 0x00 ArrayThe definition group of arrays has its place as a special data structure in any programming language, and of course the Bash shell is no exception. This article makes a small summary of the shell array. Here we only discuss

This article mainly introduces the php payment APP payment method. The example analyzes the php payment interface file and usage skills. For more information, see This article mainly introduces the php payment APP payment method. The example

The array in PHP is an ordered ing (1-to-1 relation key-value ). Array is a combination of arrays, dictionaries, and collections. The key can be int or string. Value can be of any type. The key is forcibly converted as follows: 1. A string integer

The Linux shell is much more powerful in programming than Windows batch processing, both in loops and operations. Data types are not comparable. Here's a summary of some of the things that an individual does when it comes to working with arrays.1.

The Linux shell is much more powerful in programming than Windows batch processing, both in loops and operations. Data types are not comparable. Here's a summary of some of the things that an individual does when it comes to working with arrays.1.

Symptom: It is well known that json_encode can be used to easily and quickly encode objects in json format. However, if the attributes of an object contain Chinese characters, the problem will arise. Json_encode converts Chinese to unicode encoding.

FengCms1.30 injection (front-end) Http://www.fengcms.com/ App \ model \ messageModel. php public function save($array){if($_SESSION['authnum']!=$array['vcode']||$_SESSION['authnum']==""){ return array('status' =>

This article mainly introduces the remarks of PHP7.0, which greatly improves the performance of the new version and changes the language features. The following content is the remarks of LCT translation on the official version upgrade, for more

Common functions:Rand (); Generate random numbersRand (0,50), range random numberTime:Time (); Take the current timestampDate ("y-m-d h:i:s"); Y: Year m: Month D: Day H: Current hour I: Current minute S: Current number of secondsStrlen (String), can

PHP can also detect access to Windows memory information, and the code is quite simple, no intention to find, think later can be used, here to share with you.This code will get the total memory, initial use and other memory

Smarty instance Teaching Example (3. Using ADODB to connect to a database)I have been busy for work for the first two months, so I didn't finish this tutorial in time. I don't have to work overtime on Saturday. I just need to leave it empty! When I

Bash Basics   About commands and command types Use the hash table for the command Bash to accelerate the next search. To add a frequently used command, use the hash cmdBash executes commands with the same name in the path in the following sequence: