After using PHP for a while now, I've noticed that not all PHP built in functions as fast as expected. Consider the below two possible implementations of a function that finds if a number is prime using a cached array of primes. //very slow for large $prime_array $prime_array = array( 2, 3, 5, 7, 11, 13, .... 104729, ... ); $result_array = array(); foreach( $prime_array => $number ) {
现在使用PHP一段时间后，我注意到并不是所有PHP的功能都像预期的那样快速。 考虑以下两种可能的函数实现，使用缓存的素数阵列来查找数字是否为素数。 //very slow for large $prime_array $prime_array = array( 2, 3, 5, 7, 11, 13, .... 104729, ... ); $result_array = array(); foreach( $prime_array => $number ) { $result_array[$number] = in_array( $number, $large_prime_array ); } //speed is much less d
I want to take a full path in bread crumbs in the wordpress template Now displays only the home page and category I want the home - category - the title of the article with the link to this page, with a working schema markup now the code looks like this version Wordpress 4.8.1 function barcelona_breadcrumb() { if ( barcelona_get_option( 'show_breadcrumb' ) != 'on' ) { return;
我想在wordpress模板中的面包屑中使用完整路径 现在只显示主页和类别 我想要home - category - 文章的标题，并带有指向此页面的链接，并带有一个有效的模式标记 现在代码看起来像这个版本的WordPress的4.8.1 function barcelona_breadcrumb() { if ( barcelona_get_option( 'show_breadcrumb' ) != 'on' ) { return; } $barcelona_post_type = is_single() ? get_post_type() : NULL; $barcelo
I've recently set up a nodejs chat server, the chat client is served by a php server. When users log in, their sessions will be stored in mysql of the php server, and a login cookie will append to browser. I want to restrict users that only logged in users are able to chat. What is the best practice to archieve that ? My quick thought: When the chat client loaded, if user logged in, I
我最近设置了一个nodejs聊天服务器，聊天客户端由php服务器提供服务。 当用户登录时，他们的会话将存储在php服务器的mysql中，并且登录cookie将附加到浏览器。 我想限制只有登录用户才能聊天的用户。 实现这个目标的最佳实践是什么？ 我的快速思想： 当聊天客户端加载时，如果用户登录，我会通过套接字将登录cookie信息发送到nodejs verver。 然后创建一个nodejs会话。 当用户聊天时，消息连同cookie信息将通过套接字
What is this? This is a collection of questions that come up every now and then about syntax in PHP. This is also a Community Wiki, so everyone is invited to participate in maintaining this list. Why is this? It used to be hard to find questions about operators and other syntax tokens.¹ The main idea is to have links to existing questions on Stack Overflow, so it's easier for us to r
这是什么？ 这是一个关于PHP中语法问题的集合。 这也是一个社区Wiki，所以每个人都被邀请参与维护这个列表。 为什么是这样？ 过去很难找到关于运算符和其他语法令牌的问题 主要想法是链接到堆栈溢出的现有问题，所以我们更容易引用它们，而不是复制PHP手册中的内容。 ¹注意：自2013年1月以来，Stack Overflow确实支持特殊字符。 只需通过引号括住搜索词，例如[php] "==" vs "===" 我应该在这
In PHP 5, what is the difference between using self and $this ? When is each appropriate? Short Answer Use $this to refer to the current object. Use self to refer to the current class. In other words, use $this->member for non-static members, use self::$member for static members. Full Answer Here is an example of correct usage of $this and self for non-static and static member vari
在PHP 5中，使用self和$this什么区别？ 什么时候适合？ 简答 使用$this来引用当前对象。 使用self来引用当前类。 换句话说，对非静态成员使用$this->member ，对静态成员使用self::$member 。 完整答案 下面是非静态和静态成员变量正确使用$this和self的示例： <?php class X { private $non_static_member = 1; private static $static_member = 2; function __construct() { echo $thi
What is the difference between == and === ? How exactly does the loosely == comparison work? How exactly does the strict === comparison work? What would be some useful examples? Difference between == and === The difference between the loosely == equal operator and the strict === identical operator is exactly explained in the manual: Comparison Operators ┌──────────┬───────────┬─────
==和===什么区别？ 松散的==比较工作究竟如何？ 严格===比较的工作原理是什么？ 什么会是一些有用的例子？ ==和===之间的区别 松散==相等运算符和严格===相同运算符之间的区别在手册中有详细说明： 比较运算符 ┌──────────┬───────────┬───────────────────────────────────────────────────────────┐ │ Example │ Name │ Result │ ├──────────┼────────
I've been struggling with this question for quite some months now, but I haven't been in a situation that I needed to explore all possible options before. Right now, I feel like it's time to get to know the possibilities and create my own personal preference to use in my upcoming projects. Let me first sketch the situation I'm looking for I'm about to upgrade/redevelop a
几个月来，我一直在努力解决这个问题，但是我还没有遇到过需要去探索所有可能的选择的情况。 现在，我觉得是时候了解可能性并创建我自己的个人偏好以用于即将到来的项目。 首先让我描绘一下我正在寻找的情况 我即将升级/重新开发我已经使用了很长一段时间的内容管理系统。 但是，我感觉多语言对这个系统是一个很大的改进。 在我没有使用任何框架之前，我将为即将推出的项目使用Laraval4。 Laravel似乎是更清晰的PHP代码
I've got a PHP script that needs to invoke a shell script but doesn't care at all about the output. The shell script makes a number of SOAP calls and is slow to complete, so I don't want to slow down the PHP request while it waits for a reply. In fact, the PHP request should be able to exit without terminating the shell process. I've looked into the various exec() , shell_exec
我有一个PHP脚本，需要调用一个shell脚本，但不关心输出。 shell脚本执行一些SOAP调用，并且执行速度很慢，所以我不想在等待回复时减慢PHP请求的速度。 事实上，PHP请求应该能够在不终止shell进程的情况下退出。 我研究了各种exec() ， shell_exec() ， pcntl_fork()等函数，但他们都没有提供我想要的。 （或者，如果他们这样做，我不清楚如何。）任何建议？ 如果它“不关心输出”，那么可以用&来调用该脚本的执行程序
I am installing a UPS shipping calculator API on my webstore, and it is getting prices correctly, which is great! I can't find any way to get those prices to a useful format though. I want to use them as a php variable. For this example, we will call my cart cart.php. The api is being executed by a file called ups.php. When a customer puts items in their cart and fills in their zip co
我在我的网上商店安装了一个UPS运输计算器API，它正确地获得价格，这太棒了！ 我找不到任何方法让这些价格变成有用的格式。 我想用它们作为一个PHP变量。 对于这个例子，我们会打电话给我的购物车cart.php。 api正在被一个名为ups.php的文件执行。 当客户将物品放入购物车并填写自己的邮政编码时，他们会点击一个提交按钮，然后将它们定向到运行ups.php脚本的新购物车页面，并在页面上显示数据（稍后我将删除该数据所以
I have a mysql db table that has every US city, state, zip, lat, long. On my site page I have a form input for cities. As the user types, I'd like to suggest city, state. What current practices/techniques are good? (Limitations are jQuery, PHP, MYSQL) Solution jQuery UI has a nice autocomplete feature. JQuery UI Autocomplete It is quite well configurable. You should send the data
我有一个MySQL数据库表，每个美国的城市，州，拉链，拉特，长。 在我的网站页面上，我有一个城市的表单输入。 当用户键入时，我想建议城市，州。 目前的哪些做法/技巧很好？ （限制是jQuery，PHP，MYSQL） 解 jQuery UI有一个很好的自动完成功能。 JQuery UI自动完成 它的配置非常好。 您应该从服务器以JSON格式发送数据，Autocomplete将主要处理其余部分。 查看文档。 你可能想尝试一个预先存在的插件，例如：