unset array

Document directory 1. Write a function, array_remove (), which requires that the items with the most concise value of $ V be cleared. 2. What are the security issues with the following login code? 3. Write a function to calculate the relative

In php, there are many ways to merge simple arrays, but today I want to merge arrays again based on the array ID, we only need to use array_merge to merge the simplest array operations by category. Array_merge () combines two or more arrays. the

This article provides a detailed analysis of PHP performance optimization. For more information, see PHP optimization. the main parameters in ini are adjusted and set properly. let's take a look at php below. how to set parameters that have a

Using the Json_encode () built-in function in PHP (PHP > 5.2) can be used in PHP to communicate well with other languages and use it. The function is to convert a numeric value into a JSON data storage format. ' Shia ', ' age ' =>20

There are many ways to delete an array element in PHP and to add an array element, the following is a small section to summarize some of the practical and commonly used array elements to increase the deletion instance. Add data element with function,

This article describes the PHP array passed to JavaScript and Json_encode GBK Chinese garbled solution, the following is the creation of JSON function, this section from the online one of the heroes The code is as follows Copy Code

How to quickly randomly retrieve 50 non-repeated elements from an array of 100 elements how to quickly randomly retrieve 50 non-repeated elements from an array of 100 elements? Reply to discussion (solution) Array_rand ($ a, 50 ); Remove the

Php session control SESSION and COOKIE introduction background of SESSION control Several methods for implementing user tracking: 1. variable page of the current page The current page is available. after the page is executed, the variable is

PHP array to remove elements of the re-index method, PHP array element index If you want to delete an element in an array, you can use the unset directly, but what you see today is a surprise to me. Copy the Code code as follows:$arr = Array (' A ',

PHP json_encode UTF-8 Chinese garbled problem, Recently in the interface code used to Json_encode, found on the internet said Json_encode encoding set to UTF-8 Chinese will not garbled, verified that this method is really effective, but do not know

8 PHP Programmers Common features Summary, PHP Programmer Summary Developers who have done PHP development should be aware that PHP has a lot of built-in features, mastered them, can help you in the development of PHP more handy, this article will

The simplest array merge we just use Array_merge to Array_merge () Merges the cells of two or more arrays, and the values in one array are appended to the previous array. Returns an array as the result. When the array key name is a numeric key name,

Today at the company, the manager lets make a scrolling subtitle. However, you are not allowed to generate GIF images. So the internet to find Gifencoder this class library. Really good, but, the application process also appeared some problems, now

In PHP development, we often encounter to delete the specified content in the array, but the array is a special variable we can not directly use replace replacement, need some way to operate, let me introduce you to the Operation method. If we know

In PHP array of quantum mechanics a very useful array type, let me summarize some of the various methods to delete array elements, delete the elements in the array, the first idea is to use the unset function, it can be deleted, but it may be later

The json_encode function is encoded as null in Chinese. 'Age', 'age' => 20); $ jsonencode = json_encode ($ arr); echo $ jsonencode;?>The program running result is as follows: Iconv ('gb2312', 'utf-8', 'Here is the Chinese title'), 'body' => '

Php5.2.0 memory management has been greatly improved. In some cases, the problem of memory cannot be released does not exist. Test the php script (mem. php). I use echo N> and sleep to control the pause of the script at a certain stage for detection.

Php array index and key-value operation skills Example Analysis This article describes the php array indexing and key-value operation skills. Share it with you for your reference. The details are as follows: ? 1 2 3 4 5 $

Php uses arrays to generate SQL statements to execute. Will this happen? The data obtained each time is different from the previous version. However, the addAll () function of ThinkPHP deletes the existing data and writes it again. This is obviously

1. Any number of parameters of the Function You may know that PHP allows you to define a default parameter function. But you may not know that PHP also allows you to define a function with all arbitrary parameters. The following example shows the