I want a checkbox to be checked by default,

This question already has an answer here: How can I set the default value for an HTML <select> element? 18 answers 请试试这个<select name="semester"> <option value="">Select Semester</option> <option value="1" <?php if($data['semester']==1){echo 'selected';}?>>Semester 1</option> <option value="2" <?php if($da

我想要一个复选框被默认选中,

这个问题在这里已经有了答案: 我如何设置HTML <select>元素的默认值? 18个答案 请试试这个<select name="semester"> <option value="">Select Semester</option> <option value="1" <?php if($data['semester']==1){echo 'selected';}?>>Semester 1</option> <option value="2" <?php if($data['semester']==2){echo 'selected';}?&g

simple POST method not working

I've created an account just so I could ask this question: Why is the post method not working on these simples files? Code on file 1: <form method="POST" action="caralho.php"> <input type="text" id="titulo_cardapio" /> <input type="submit" /> </form> file 2, "caralho.php": <?php $crlh = $_POST['titulo_cardapio']; echo $crlh; ?> Thi

简单的POST方法不起作用

我创建了一个帐户,所以我可以问这个问题:为什么post方法不能处理这些简单文件? 代码文件1: <form method="POST" action="caralho.php"> <input type="text" id="titulo_cardapio" /> <input type="submit" /> </form> 文件2,“caralho.php”: <?php $crlh = $_POST['titulo_cardapio']; echo $crlh; ?> 这个简单的表单在某种程度上不会发布变量,当我点击提交按钮后加

Core: Why does Laravel store Aliases multiple times?

Laravel does in its core in Application.php register a lot of the Default Implementations like this: 'url' => ['IlluminateRoutingUrlGenerator', 'IlluminateContractsRoutingUrlGenerator'], Which will in effekt call the method below two times public function alias($abstract, $alias) { $this->aliases[$alias] = $abstract; } resulting in the following values in Container->a

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I am looking how to implement a function, that binds any variable to function. Using hypothetical function Closure::bindVariable($closure, $name, $value) , implementation could be like this: function bindAnything($closure, $anyVariables) { foreach ($variables as $variable => $value) { Closure::bindVariable($closure, $variable, $value); } return $variable; } Unfortun

如何将变量绑定到Closure?

我正在寻找如何实现一个函数,它绑定了任何变量来运行。 使用假想函数Closure::bindVariable($closure, $name, $value) ,实现可能是这样的: function bindAnything($closure, $anyVariables) { foreach ($variables as $variable => $value) { Closure::bindVariable($closure, $variable, $value); } return $variable; } 不幸的是,没有Closure::bindVaraiable 。 有Closure::bind ,但只有

digit hex color code

I've been using 3-digit hex color values in CSS for a long time: #fff , #999 , #069 , etc. I can see how the repeating letters/numbers are merged to create a 3-digit hex color code, but I don't fully understand the pattern to be able to write a converter in PHP. Is there documentation for this? Edit: Oh, perhaps my question wasn't clear. I need to know how some of the 6-digit hex

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我一直在CSS中使用3位十六进制颜色值很长时间: #999 #fff , #999 , #069等。我可以看到重复的字母/数字是如何合并以创建一个3位十六进制颜色代码,但我不完全理解能够使用PHP编写转换器的模式。 有这方面的文件吗? 编辑:哦,也许我的问题不清楚。 我需要知道一些6位十六进制颜色值是如何转换为3位的。 xxxxxx ( ffffff )和xxyyzz ( 006699 ) - 这是唯一的两种模式,对吗? 要将3个字符的十六进制代码转换为6个字

Retrieve list of only root objects (folders) in S3

Given my S3 bucket that contains images in a structure like so: root/portraits/portrait_001.jpg root/landscapes/landscape_001.jpg where root is my bucket, and there are no other files in my root, just those folders (objects), how do I retrieve a list of just those objects? portraits/ landscapes/ I am familiar with using the Delimiter and Prefix in the ListObjects call. If I do the following

在S3中仅检索根对象(文件夹)的列表

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Remove inline CSS and classes from text with PHP

I have a text in this form: aaaa bbbbb cccccc a:link {text-decoration: none;font-family: Verdana, Arial, Helvetica, sans-serif;color: #ffffff; } a:hover {text-decoration: underline; } .intro{font-size: 11px;font-weight: bold;line-height: 18px;color : #ffffff;padding-left: 25px;font-family: Verdana, Arial, Helvetica, sans-serif; } ddddd eeeeee I would like to remove all the css with the cla

使用PHP从文本中删除内联CSS和类

我有这样一个文本: aaaa bbbbb cccccc a:link {text-decoration:none; font-family:Verdana,Arial,Helvetica,sans-serif; color:#ffffff; } a:hover {text-decoration:underline; } .intro {font-size:11px; font-weight:bold; line-height:18px; color:#ffffff; padding-left:25px; font-family:Verdana,Arial,Helvetica,sans-serif; } ddddd eeeeee 我想删除所有类的CSS。 输出应该是: aaaa bbb

How can i know my remaining Soundcloud API Limit?

I am working with Sound-Cloud API in my application for these i create some APIs. It was working fine yesterday but now its showing error: string(47) "The requested URL responded with HTTP code 429. I checked Sound-Cloud documentation and find HTTP Code 429 related to Too many request. Here my concern is How i can know count of my all requests and remaning request. Effective July 1,

我如何知道我剩余的Soundcloud API限制?

我在我的应用程序中使用Sound-Cloud API来创建一些API。 它昨天工作正常,但现在它显示 错误:字符串(47)“请求的URL以HTTP代码429响应。 我检查了声音云文档并发现与请求太多相关的HTTP代码429。 在这里,我的关注点是如何知道我的所有请求和重新请求的数量。 自7月1日起,所有导致访问可播放流的请求都将受到每24小时时间窗口15,000次请求的限制。 参考 注意 无法计数,剩余或使用多少个请求。 解 你必须检

Displaying and linking Foreign Key content in PHP

I am taking some online courses and in one of the exercises we are to create two tables for a blog - blog articles and blog posts - and connect them through a foreign key, then display all content from both. Comments should be linked to a specific article only, while also allowing multiple comments. My attempt: function list_articles() { include('core/db/db_connection.php'); $sql = "

在PHP中显示和链接外键关键字

我参加了一些在线课程,在其中一项练习中,我们将为博客创建两个表格 - 博客文章和博客文章 - 并通过外键连接它们,然后显示来自两者的所有内容。 评论应该仅与特定文章相关联,同时也允许多个评论。 我的尝试: function list_articles() { include('core/db/db_connection.php'); $sql = "SELECT blog.title, blog.content, blog.posted_by, blog.date, article_comments.comments, article_comments.comment_by

Convert hex color to RGB values in PHP

使用PHP将十六进制颜色值(如#ffffff转换为单个RGB值255 255 255是一种好方法? Check out PHP's hexdec() and dechex() functions: http://php.net/manual/en/function.hexdec.php Example: $value = hexdec('ff'); // $value = 255 If you want to convert hex to rgb you can use sscanf : <?php $hex = "#ff9900"; list($r, $g, $b) = sscanf($hex, "#%02x%02x%02x"); echo "$hex -> $r $g $b"; ?> Output

在PHP中将十六进制颜色转换为RGB值

使用PHP将十六进制颜色值(如#ffffff转换为单个RGB值255 255 255是一种好方法? 查看PHP的hexdec()和dechex()函数:http: dechex() 例: $value = hexdec('ff'); // $value = 255 如果你想将十六进制转换为rgb,你可以使用sscanf : <?php $hex = "#ff9900"; list($r, $g, $b) = sscanf($hex, "#%02x%02x%02x"); echo "$hex -> $r $g $b"; ?> 输出: #ff9900 -> 255 153 0 我做了一个函数,如果alpha作为代