PHP中判断索引是否为空的函数
PHP中判断目录是否为空的函数
判断目录是否为空,true为空,false为不空
function is_empty_dir($fp)
{
$H = @ opendir($fp);
$i=0;
while($_file=readdir($H)){
$i++;
}
closedir($H);
if($i>2){
return false;
}else{
return true;
}
}
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
Detailed explanation of the usage of return in C language
Oct 07, 2023 am 10:58 AM
The usage of return in C language is: 1. For functions whose return value type is void, you can use the return statement to end the execution of the function early; 2. For functions whose return value type is not void, the function of the return statement is to end the execution of the function. The result is returned to the caller; 3. End the execution of the function early. Inside the function, we can use the return statement to end the execution of the function early, even if the function does not return a value.
What does function mean?
Aug 04, 2023 am 10:33 AM
Function means function. It is a reusable code block with specific functions. It is one of the basic components of a program. It can accept input parameters, perform specific operations, and return results. Its purpose is to encapsulate a reusable block of code. code to improve code reusability and maintainability.
What is the execution order of return and finally statements in Java?
Apr 25, 2023 pm 07:55 PM
Source code: publicclassReturnFinallyDemo{publicstaticvoidmain(String[]args){System.out.println(case1());}publicstaticintcase1(){intx;try{x=1;returnx;}finally{x=3;}}}#Output The output of the above code can simply conclude: return is executed before finally. Let's take a look at what happens at the bytecode level. The following intercepts part of the bytecode of the case1 method, and compares the source code to annotate the meaning of each instruction in
What is the purpose of the 'enumerate()' function in Python?
Sep 01, 2023 am 11:29 AM
In this article, we will learn about enumerate() function and the purpose of “enumerate()” function in Python. What is the enumerate() function? Python's enumerate() function accepts a data collection as a parameter and returns an enumeration object. Enumeration objects are returned as key-value pairs. The key is the index corresponding to each item, and the value is the items. Syntax enumerate(iterable,start) Parameters iterable - The passed in data collection can be returned as an enumeration object, called iterablestart - As the name suggests, the starting index of the enumeration object is defined by start. if we ignore
Detailed explanation of the role and function of the MySQL.proc table
Mar 16, 2024 am 09:03 AM
Detailed explanation of the role and function of the MySQL.proc table. MySQL is a popular relational database management system. When developers use MySQL, they often involve the creation and management of stored procedures (StoredProcedure). The MySQL.proc table is a very important system table. It stores information related to all stored procedures in the database, including the name, definition, parameters, etc. of the stored procedures. In this article, we will explain in detail the role and functionality of the MySQL.proc table
How does Vue3 use setup syntax sugar to refuse to write return
May 12, 2023 pm 06:34 PM
Vue3.2 setup syntax sugar is a compile-time syntax sugar that uses the combined API in a single file component (SFC) to solve the cumbersome setup in Vue3.0. The declared variables, functions, and content introduced by import are exposed through return, so that they can be used in Vue3.0. Problems in use 1. There is no need to return declared variables, functions and content introduced by import during use. You can use syntactic sugar //import the content introduced import{getToday}from'./utils'//variable constmsg='Hello !'//function func
Detailed explanation of JavaScript function return values and return statements
Aug 04, 2022 am 09:46 AM
JavaScript functions provide two interfaces to interact with the outside world. The parameters serve as the entrance to receive external information; the return value serves as the outlet to feed back the operation results to the outside world. The following article will take you to understand the JavaScript function return value and briefly analyze the usage of the return statement. I hope it will be helpful to you!
Use the return keyword in JavaScript
Feb 18, 2024 pm 12:45 PM
Usage of return in JavaScript requires specific code examples In JavaScript, the return statement is used to specify the value returned from a function. Not only can it be used to end the execution of a function, it can also return a value to the place where the function was called. The return statement has the following common uses: Return a value The return statement can be used to return a value to the place where the function is called. Here is a simple example: functionadd(a,b){
