Home Backend Development PHP Tutorial javascript - Problem with HTML JS passing value to PHP.

javascript - Problem with HTML JS passing value to PHP.

Aug 04, 2016 am 09:19 AM
html javascript php

Maybe my thinking is not good. What I need to do is to select multiple pictures, click to automatically package the zip, and then download.
ZIP already exists, but PHP doesn’t understand it, so I made a form on the front end to get multiple image addresses to PHP, and then PHP traversed and packaged them into ZIP.
PHP

<code>$imagee = $_GET['pic'];
    foreach ($imagee as $k => $v) {
     $image[]= array(
            'image_src'  =>$v,
            'image_name' => mt_rand(1, 1111) . '.jpg'
        );
    }
</code>
Copy after login
Copy after login

Originally I wanted to get the specified src through js
js

<code><script>
var images = document.getElementsByClassName("1");
var imageStr = "";
for(var i=0;i<images.length;i++){
   imageStr+=images[i].src+'/';
}

alert(imageStr);
</script>
</code>
Copy after login
Copy after login

I found that the output is a piece of data, and PHP doesn’t know how to write a loop
Can you help me? Get the image address of the specified class and pass it to the background phpzip for packaging

Reply content:

Maybe my thinking is not good. What I need to do is to select multiple pictures, click to automatically package the zip, and then download.

ZIP already exists, but PHP doesn’t understand it, so I made a form on the front end to get multiple image addresses to PHP, and then PHP traversed and packaged them into ZIP.
PHP

<code>$imagee = $_GET['pic'];
    foreach ($imagee as $k => $v) {
     $image[]= array(
            'image_src'  =>$v,
            'image_name' => mt_rand(1, 1111) . '.jpg'
        );
    }
</code>
Copy after login
Copy after login
Originally I wanted to get the specified src through js

js

<code><script>
var images = document.getElementsByClassName("1");
var imageStr = "";
for(var i=0;i<images.length;i++){
   imageStr+=images[i].src+'/';
}

alert(imageStr);
</script>
</code>
Copy after login
Copy after login
I found that the output is a piece of data, and PHP doesn’t know how to write a loop

Can you help me? Get the image address of the specified class and pass it to the background phpzip for packaging

<code>$imagee = $_GET['pic'];
    foreach ($imagee as $k => $v) {
     $image[]= array(
            'image_src'  =>$v,
            'image_name' => mt_rand(1, 1111) . '.jpg'
        );
    }
我看你这段代码感觉你上传的变量就是一个$_GET['pic'],所以你在前端很可能提交的是一张图片还不是一段图片吧。如果你要提交一组图片,可能参考下下面的方式:
1。<input type="file" name="pic[]" >
这样在后台$_GET['pic']得到的就是一个数组了,可以遍历了。
2。使用js把前台选中的图片地址,json化,然后赋值给<input type="file" name="pic" >再提交表单,或者直接js提交表单。</code>
Copy after login
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

How do you parse and process HTML/XML in PHP? How do you parse and process HTML/XML in PHP? Feb 07, 2025 am 11:57 AM

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

PHP Program to Count Vowels in a String PHP Program to Count Vowels in a String Feb 07, 2025 pm 12:12 PM

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

Explain late static binding in PHP (static::). Explain late static binding in PHP (static::). Apr 03, 2025 am 12:04 AM

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? Apr 03, 2025 am 12:03 AM

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

The Roles of HTML, CSS, and JavaScript: Core Responsibilities The Roles of HTML, CSS, and JavaScript: Core Responsibilities Apr 08, 2025 pm 07:05 PM

HTML defines the web structure, CSS is responsible for style and layout, and JavaScript gives dynamic interaction. The three perform their duties in web development and jointly build a colorful website.

See all articles