Course Intermediate 11396
Course Introduction:"Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.
Course Advanced 17706
Course Introduction:"Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.
Course Advanced 11401
Course Introduction:"Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.
How can a function within a function call a variable of the parent function?
var_dump(function_exists('b')); // false function a(){ $var = 123; function b(){ &nb
2022-12-05 19:48:12 0 0 654
Problems when calling private function test() through public function getSalary()
public function getSalarya() { $res = $this->test(); return $res; } private function test(){ 
2018-10-12 06:40:47 1 4 1046
2017-05-19 10:23:44 0 2 566
2019-09-17 09:35:44 0 2 1296
React reports props."function" is not a function
2023-09-04 10:38:59 0 1 667
Course Introduction:python function - id function
2016-10-17 comment 0 1334
Course Introduction:PHP function introduction: is_callable() function In PHP, the is_callable() function is used to check whether a function or method is callable. It returns a boolean value, true if callable, false otherwise. This function is very useful when calling functions or methods dynamically. It can help us check whether the function or method exists before calling it. The is_callable() function can accept one parameter or two parameters. When there is only one argument, the function checks
2023-11-03 comment 0 876
Course Introduction:Introduction to PHP functions: array_key_first() function PHP is a widely used server-side scripting language, and functions are an integral part of PHP programming. In the PHP function library, the array_key_first() function is a practical function introduced in PHP7.3. Its function is to get the first key name of the array. The syntax of the array_key_first() function is as follows: array_key_first(array
2023-11-04 comment 0 1484
Course Introduction:PHP function introduction: array_merge() function, specific code examples are required. PHP is a powerful programming language. It has countless built-in functions. Each function in the function library has its own unique purpose and effect. This article will introduce a very commonly used function in PHP, which is the array_merge() function. The array_merge() function is a function used to merge two or more arrays. It merges the elements of two or more arrays into one array and returns a new array. a
2023-11-03 comment 0 1749
Course Introduction:PHP function introduction: str_split() function, specific code examples are required. In PHP programming, strings often need to be processed, and the basic unit of string operations is characters. The str_split() function can help us split a string into individual characters. In this article, we will explain the usage of this function in detail along with usage examples. str_split() function usage The format of this function is as follows: str_split(string$string
2023-11-04 comment 0 1870